How to Fix ACPI_BIOS_ERROR in Windows 10

BSOD or Blue Screen of Death errors are one of the most common errors you can encounter on your Windows PC. One of these BSOD errors is the “ACPI_BIOS_ERROR”. If you suddenly get this error, it means that there is some problem in booting the operating system from your hard drive or Windows was not properly installed on your PC. In addition, this error could also mean that there is something wrong with the CMOS battery located in the motherboard.

Unlike other BSOD errors, the workaround for this error is a bit different as these workarounds require a bit more expertise in updating the BIOS as well as setting the correct boot configuration. If you know are capable enough in troubleshooting the problem, refer to the instructions laid out below to fix the BSOD “ACPI_BIOS_ERROR”.

Option 1 – Try to remove the SSD and update the BIOS

The first thing you have to do is to check the primary storage devices on your PC. If you have just installed a new hard drive or SSD recently on your computer, then it’s most likely the cause of the BSOD error. Moreover, you should also ensure that your BIOS is up-to-date to the latest available build.

  • Remove the SSD/HDD and inject a different HDD that was already preinstalled in your Windows PC.
  • After that, update the BIOS to the latest available build. After updating it, insert the old SSD/HDD and then try to boot your PC again. The problem should be fixed now. If not, refer to the next given option.

Option 2 – Try to check the CMOS battery and reset the CMOS module

As mentioned earlier, the CMOS battery might also be the one that’s causing the problem. It is a physical component of the motherboard and is a memory chip that contains all the settings configuration on your computer and is also powered by a battery. So if your battery loses power, the CMOS will be reset and as a result, all the configurations will be gone as well. It is also possible that the CMOS module is not properly working and every time things are saved, they are properly written due to the battery. That’s why you have to consider changing the CMOS battery and see if it fixes the problem. In addition, you also have to make sure that you completely reset the CMOS module and then try booting your PC again.

Option 3 – Try to check the BIOS settings

If the BIOS settings are incorrect, chances are that’s the reason why you’re getting the “ACPI_BIOS_ERROR” BSOD error. Every BIOS has different settings which you can make use of to enhance your computer experience. So make sure that your BIOS is up-to-date and that the settings are in accordance with your requirement.

Another thing you can try is to disable the Legacy USB and the Legacy BIOS in the BIOS settings if you are trying to install a 64 bit Windows version. Make sure that you also enable AHCI before plugging in the installation drive on your PC. Moreover, ensure that your PC is using IDE or Integrated Drive Electronics mode instead of SATA or Serial Advanced Technology Attachment. Aside from that, try to check the extracted setup if it is in NTFS format, if it is, you should extract the ISO in FAT32 and use it to install Windows.

Option 4 – Try to reset the ACPI Compliant Control Method

ACPI or Advanced Configuration and Power Interface provide an open standard that operating systems can use to detect hardware, perform power management, as well as monitor the status of your device and provide information for other processes. Chances are, there are some misconfigurations with this module on your PC that lead to believing that there is no battery present. That’s why you need to reset it and see if it fixes the BSOD error or not.

  • Boot your PC into Safe Mode.
  • Tap the Win + R keys to open the Run dialog box.
  • Type in “devmgmt.msc” in the field and tap Enter to open the Device Manager.
  • After opening the Device Manager, go to the “Batteries” section and click it to expand it and then right-click on the “Microsoft ACPI-Complaint Control Method Battery” option and click on Uninstall.
  • After you disable the module, click on any empty space and then click the “Scan for hardware changes” option.
  • Then check if you can now boot your PC normally and without the BSOD error.

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Should you upgrade to Windows 11
Windows 11 has been rolling out for a while now so many PC users ask the question is it wise and good to upgrade your Operating System to the latest Microsoft incarnation. No Thank you for reading, cya tomorrow in next article. Windows 10 vs Windows 11Jokes aside, I truly believe that choosing to upgrade your System to Windows 11 at this point in time is a bad decision and I will explain why I do believe it.

Reasons to upgrade to the new OS

First of all, let me say what is good in Windows 11 and provide reasons why you should upgrade your computer.
  1. The new fancy look made for modern computers. New Windows new look, Microsoft has tried their best to bring a new modern look to its flagship operating system and I must say that they have managed it. I could argue that it is a little bit late since Apple had this kind of look in years but hey, better late than never I guess.
  2. Increased security This point is very valid but it will play a role only if you have all system requirements including TPM 2.0. If that is the case new security features of OS are really well done and are perhaps one thing that might nudge some people in installing W11 on their system.
  3. New settings app The New and redesigned settings app inside Windows 11 is really great and it provides a great workflow and easy management of system settings. This is not some radical change but it will save time and make life much easier.
  4. It is better suited to the newest hardware Windows 11 was made with the newest hardware in mind and its performances on it are great so if you are punching the latest tech this reason is sufficient to make a switch, however, if you are still on an older system you will not gain much by switching.

Reasons to avoid Windows 11 for now

  1. Almost just a visual update to Windows 10 Some features of Windows 11 are great but they are not plenty of them to justify a new number and new version of OS. Considering what we really got new under the hood Windows 11 could have been just a patch and update to Windows 10 since the architecture is the same.
  2. Bugs Each day there are new bugs reporting for Windows 11, most of them are at the moment unsolvable and are caused because hardware manufacturers' drivers and software overall is not W11 ready. This hinders the stability of some systems and introduces headaches to others.
  3. Runs poorly on unsupported hardware Strange behavior has been reported on some older systems, granted systems are not officially supported but the point is OS is simply not working at the top of its game on older hardware.
  4. No updates on non supported systems Officially stated if you install Windows 11 on non-supported hardware you will not get any security updated on in. This is a deal-breaker as far as I am concerned.
  5. It is still under development When Windows 11 was released, Android native apps were not working on it, it later came with an update, this is just one example but there are more features that were promised but are not delivered on release and constant updates are fixing these things. It is obvious that Windows 11 is still under active development and not the final product that was promised.
  6. Microsoft’s edge pushing And not just edge, some other things as well but most notably is edge pushing to borders they are risking lawsuit similar as they did in the past pushing and disabling any other browser except internet explorer.

Conclusion

Firstly I want to point that this is my personal opinion but going through facts and taking into account the current state of Windows 11, at this point, it is not worth making a switch. I am sure that in time it will become a system that will be worth upgrading to but until that time comes, my advice would be to stay with Windows 10.
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How to Fix Error 0x800CCC90

Error 0x800CCC90 - What is it?

Error 0x800CCC90 is a typical Outlook error. This error indicates that Outlook has failed to connect to the mail server that handles and manages the incoming and outgoing emails. The error message is displayed in the following format:

“There was a problem logging onto your mail server. Your User Name was rejected.”

This error limits your ability to send and receive emails on Outlook. If you largely communicate at the workplace using your Outlook account, this error may slow down your work productivity and performance dramatically. Therefore it is advisable to fix it immediately.

Solution

Restoro box imageError Causes

The error 0x800CCC90 is triggered several reasons including but not limited to:
  • Authentication issues
  • Failure of POP 3 Server
  • PST File Corruption
  • Registry issues- Invalid Entries
  • Viral infection

Further Information and Manual Repair

To resolve error 0x800CCC90, try the methods given below:

Method 1 - Adjust the Authentication Settings

To resolve the error 0x800CCC90, adjust the authentication settings. Here’s what you need to do:
  • First, go to the ‘Tools’ tab and select the ‘Accounts’ option.
  • Once you select the account option, an internet accounts box will appear on the computer screen.
  • Simply double click on the account property box after that go to the server tab and click on it.
  • Check the box that says ‘My Server Requires Authentication’.
  • Click on apply to accept changes tab to save changes and close the window.
  • To activate changes made, restart Outlook and then try sending emails again.

Method 2 - Download a PST Repair Tool

If the error is triggered by PST file corruption, then the best way to resolve it is to download the PST repair tool. Download the PST repair tool from a trusted website. Run it on your system to fix PST file issues and resolve error 0x800CCC90.

Method 3 - Scan for Viruses

Another way to resolve this error is to scan for viruses. Viruses usually enter computer systems through phishing emails or while downloading attachments. You may not know this but viruses may be affecting your PC. Due to viruses, errors like error 0x800CCC90 can also be triggered. Therefore install an antivirus to scan and remove errors on your PC.

Method 4 - Clean the Registry and Remove Invalid Entries

Due to poor PC maintenance, misconfigured and invalid registry entries may be stored in the registry. Such entries may lead to Outlook errors too. Thus to resolve you must clean the registry and remove these entries right away. Download a registry cleaner to fix the error. Whether the error is triggered by viral infection or registry issues, it is recommended you download only Restoro. This is the one-stop solution to resolve all PC related errors. This software is deployed with 6 scanners including a registry cleaner, an antivirus, and a system optimizer. It is user-friendly and has simple navigation. It is compatible with all Windows versions. In just a few clicks this software resolves practically all types of PC-related errors including error 0x800CCC90. Click here to download Restoro today!
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Fix boot into the next phase of installation
There are various complex tasks that take place under the hood while you upgrade or clean install the Windows operating system on a computer. Because of its complexity, there are times when you might encounter some errors when you upgrade or clean install Windows 10. One of the errors you could encounter is the error that states, “Windows could not prepare the computer to boot into the next phase of installation. To install Windows, restart the installation”. This error does not only occur in Windows 10 as it could also occur on the other versions of Windows. There are a lot of possible causes for this error. It could be due to incompatible BIOS, corrupted system files, improper installation media or it could also be due to excessive hardware plugged into your computer and so on. Whatever the cause is, here are some potential fixes you need to check out to fix the problem.

Option 1 – Try to disconnect or disable newly installed hardware

In this option, you will have to disable or remove the hardware you’ve just installed recently since external devices could be the one that’s causing the Blue Screen of Death error to appear. To do that, just disconnect any external device that’s connected to your computer physically and then check if it fixes the error.

Option 2 – Try to update the BIOS

As you know, the BIOS is a sensitive part of a computer. Even though it is a software component, the functioning of the hardware depends on it largely. Thus, you must be careful when modifying something in the BIOS. So if you don’t know much about it, it’s best if you skip on this option and try the other ones instead. However, if you are well-versed in navigating the BIOS, then follow the steps below.
  • Tap the Win + R keys to open the Run dialog box.
  • Next, type “msinfo32” in the field and press Enter to open System Information.
  • From there, you should find a search field on the bottom where you have to search for the BIOS version and then press Enter.
  • After that, you should see the developer and version of the BIOS installed on your PC.
  • Go to your manufacturer’s website and then download the latest version of BIOS on your computer.
  • If you are using a laptop, make sure that you keep it plugged in until you have updated the BIOS.
  • Now double click on the downloaded file and install the new BIOS version in your computer.
  • Now restart your computer to apply the changes made.

Option 3 – Try to reconfigure all the created partitions

You could also try to reconfigure the partitions by deleting and recreating all the available partitions on your computer and then see if it fixes the problem.

Option 4 – Make a proper bootable USB Drive/Stick

To make a proper bootable USB drive, you need to use the Windows Media Creation tool. The Media Creation tool in Windows allows you to use the ISO installation file to make a bootable device that you can use to install Windows on your PC. Note that this is kind of different from the usual installation process as it could erase your computer’s current settings and data on the primary drive. Thus, before you proceed, you need to backup all your data into some removable drive and then use the Media Creation Tool to make a bootable drive.
  • After making the bootable drive, you need to plug it into your computer and then reboot.
  • Next, tap the F10 or Esc key to open the boot options.
  • Now set the boot priority of the removable drive the highest. Once the setup comes forth, follow the next onscreen instructions and install Windows without any problems.
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My device used to work, but now it doesn’t
So you just have turned your computer ON only to find out that your device which was working perfectly yesterday is not working anymore. This situation can be very stressful and disappointing but do not despair, before you toss your device through the window know that this kind of behavior can be traced back to a software issue. In this article, we will give you hints on what to do and where to pay attention when something like this happens so you get the device back in working order.
  1. Check if it not a hardware malfunction

    To save yourself time and unnecessary frustration with juggling through Windows first inspect the device to be sure that indeed it is working properly, check all led lamps which could indicate that the device is working and receiving power, and if it is an internal device try opening the case and visually check if there are signs of working like rotating fans or led lamps on it.
  2. Check Cables

    If it is an external device that has stopped working try checking power cables and cables which go to your computer, see if they are tightly connected. If it is an internal device also check cables, nudge them and if possible disconnect and clean them.
  3. Disconnect and reconnect the device

    Try this solution to see will Windows register the device again and start it.
  4. Update Windows

    If there is a Windows update not installed, install it and see if the device will start working.
  5. Update device drivers

    Go to device manager and update the device driver to its latest version or go to the manufacturer's site and download the latest driver version.
  6. Reinstall the device

    In the device manager, uninstall the device driver and reboot Windows. When Windows boots it will recognize the device and install the necessary drivers for it.
  7. Disable antivirus and firewall

    Sometimes antivirus can prevent certain devices from working properly, especially if they rely on some system files to which antivirus or firewall has cut access. Try disabling your PC protection to see if this will resolve the issue.
  8. Use dedicated error software

    Use DRIVERFIX to automatically search and fix driver issues.
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An Easy Guide to Fixing Error Code 12

Error Code 12 - What is it?

Error code 12 is a typical Device Manager error code. It usually pops on the computer screen when the computer experiences device driver problems or system resource conflicts.

Error code 12 is mostly displayed on the computer screen in the following format:

‘This device cannot find enough free resources that it can use. If you want to use this device, you will need to disable one of the other devices on this system.’

Solution

driverfix boxError Causes

The error code 12 occurs when 2 devices installed on your PC are accidentally assigned the same I/O (input/output) ports or the same direct memory access channel.

This assignment is known to be made either by BIOS (Basic Input/output system) or by the operating system. It can sometimes be assigned by a combination of the two. Also, code 12 can also appear on your monitor screen if the BIOS didn’t allocate enough resources to the device.

Although this error code is not fatal, it is nonetheless advisable to fix it immediately to avoid inconvenience and hassle. This error is most likely to lower and hamper the performance of your system.

Further Information and Manual Repair

Here are some of the easiest and most effective do-it-yourself methods to resolve error code 12 on your PC. To perform these fixes, you don’t have to be technically sound or a computer programmer for that matter. Simply follow the steps to fix the problem right away.

Method 1 - Use the Troubleshooting Wizard to identify the Conflict

To repair error code 12, simply go to the start menu and type Device Manager in the search box. Now go to the Device Properties dialog box. After that click on the ‘General Tab’ and now access Troubleshoot to start the Troubleshooting Wizard.

The Wizard will ask you some questions and provide you a solution accordingly. Follow the instructions and resolution steps provided by the troubleshooting wizard to repair error code 12 on your PC.

Method 2 - Disable the Device to Resolve

By disabling the problematic device in the Device Manager, Windows will ignore that piece of hardware. Once disabled, Windows will then no longer assign system resources to that device and no driver/software will be able to use that device.

To disable, go to the Device Properties in the Device Manager and then click the Driver tab. Click disable located at the bottom of the window. Then you will be prompted with a message stating ‘Disabling this device will cause it to stop functioning. Do you wish to disable it?’ Click yes to continue and then click OK to save changes.

Method 3 - Restore Your PC to its Previous State

Another method to resolve error code 12 is to restore your PC to its previous state when it was working properly.

For this, it is important to backup all your data first to avoid data loss issues that are likely to occur during this process. Creating backups manually can be a time-consuming and tedious task. To save time and quicken the process, it is best to install a program like DriverFIX.

DriverFIX is a user-friendly and intuitive device driver management software that helps backup all your data automatically and efficiently, while simultaneously restores your PC back to its previous state before you encountered problems.

Click here to download DriverFIX on your system to resolve error code 12

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Microsoft bans Windows from Russia

Microsoft has cut out Russia from downloading ISO files for Windows 10 and Windows 11 as well as installation tools without any explanation or reason behind this.

microsoft

If you connect via VPN to a Russian server and try to download either ISO files or installation tools you will be greeted with the error 404 and an explanation of File or Directory not found or There was a problem with your request.

At this time you can still download Windows 11 Media creation tool but once you run it will throw a 0x80072F8F-0x20000 error with text: For some unknown reason, this tool failed to run on your computer.

People in Russia can still download files if they connect via VPN and go to a server located outside Russia.

Microsoft has not published any explanation why is this happening, it might be technical difficulty or it could be on purpose.

Other histories of Microsoft vs Russia

Since the beginning of the Russian military operation in Ukraine Microsoft has been putting restrictions on Russia starting with a suspension of all sales in March, next month in April Microsoft started suspending developer's accounts on GitHub linked to sanctioned companies and the suspension was even if the developer is not working for a given company or left it.

At the beginning of this month, Microsft laid off 400 employees inside Russia as they began scaling back operations in the country but has also stated that they would continue to provide services to all contractors and customers inside Russia so this sudden blocking of downloads is unexpected and it goes against their statement.

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Windows PC advantages over Apple Mac

In the last article, we have covered various advantages of Apple hardware over Windows PC, however, PC has their own strengths and advantages over MACs as well. Join us as we explore why would you choose Windows PC over MAC.

Windows PC

Hardware customization

If you like to customize and build your own hardware and customize your existing computer then MACs are out of the picture, on other hand, computers based on Windows operating system are much more flexible in terms of customization.

While Apple hardware is locked and only allows small changes to it, computers running on Windows are free and open to various upgrades and modifications so if you like to play with hardware Windows is your platform.

Gaming

There are games on MAC true but their numbers can not compare to games available for the Windows platform. On top of that, most latest and best gaming hardware is not even available on Apple platforms so if you plan to game in high resolutions and play the latest games there really is no option other than Windows.

Windows Platforms also has multiple emulators that you can use to play games from other older platforms and Microsoft since it owns Xbox has some great plans for both PC and Xbox gaming.

Software back compatibility

Since the introduction of the new MAC OS X, apple really lost a lot of application back compatibility, and a lot of old legacy software can not be run on modern Apple computers. Windows on the other hand have always tried and succeeded in keeping maximum compatibility with older and legacy software.

Also on the Windows platform, there is a lot of community support for old and legacy software so even if it is not officially supported it is backed up by the community.

Software variability

In terms of where can you find the most different software, you need to look no further than the Windows platform. How Windows itself has great backward compatibility and a lot of developers are using it to create new software thanks to Visual Studio and .NET Windows has cemented itself as a platform with the most available software.

The popularity of Windows as the home operating system and as a gaming platform has made it quite interesting in eyes of various developers and tons of small applications are made daily for it. Windows 11 has also brought native android support to it and that has just expanded its already impressive catalog of applications.

Freedom of choice

Overall Windows PC is most appealing for users that like to be able to choose everything, from hardware components to software they would like to use. No other platform will give you larger freedom of choice and better personalization options.

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How to Fix Windows Update error 0x80092004
If you encounter Windows Update error 0x80092004 while trying to update your Windows 10 computer, then this post is for you. This kind of Windows Update error could be due to many reasons but none of them includes your hardware or installed driver software. Microsoft releases updates that are either not supposed to go out, or you install them when you click on the Check for Update button which can install updates that have not finished testing yet. As a result, you may encounter the Windows Update error 0x80092004 To resolve the Windows Update error 0x80092004, here are some fixes you can try.

Option 1 – Try removing recent updates and packages

When a Windows Update fails, it mostly rolls back and cleans up all its residues. However, there are times when it doesn’t and you can clean that package manually. To remove recent updates and packages, you can go to the Update History and find out what KB updates were installed and once you’ve figured it out, you can execute the DISM tool to remove it manually.
  • Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
  • After that, execute the “Dism /online /Get-Packages”. This will give you a list of packages that were recently installed.
  • Now run the Remove Package program to remove the concerned update and package.
dism.exe /online /remove-package /packagename:Package_for_RollupFix_Wrapper~31bf3856ad364e35~amd64~~16299.248.1.17 /packagename:Package_for_RollupFix~31bf3856ad364e35~amd64~~16299.125.1.6 /packagename:Package_for_RollupFix_Wrapper~31bf3856ad364e35~amd64~~16299.192.1.9 /packagename:Package_for_RollupFix~31bf3856ad364e35~amd64~~16299.192.1.9 /norestart
  • Now restart your computer and log back in.
  • After that, run the following command:
Dism.exe /online /Cleanup-Image /StartComponentCleanup
  • Then scan for updates.
Note: Keep in mind that the remove package command is made for AMD 64-bit machines specifically.

Option 2 – Try deleting the files from the SoftwareDistribution folder and resetting the Catroot2 folder

The downloaded Windows Updates are placed in a folder called “SoftwareDistribution”. The files downloaded in this folder are automatically deleted once the installation is completed. However, if the files are not clean up or if the installation is still pending, you can delete all the files in this folder after you pause the Windows Update service. For complete instructions, refer to the steps below.
  • Open the WinX Menu.
  • From there, open Command Prompt as admin.
  • Then type in the following command – don’t forget to hit Enter right after typing each one of them.
net stop wuauserv net start cryptSvc net start bits net start msiserver
  • After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
  • Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
After resetting the SoftwareDistribution folder, you need to reset the Catroot2 folder to restart the services you just stopped. To do that, follow these steps:
  • Type each one of the following commands.
net start wuauserv net start cryptSvc net start bits net start msiserver
  • After that, exit Command Prompt and restart your computer.

Option 3 – Try to run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the “We couldn’t install some updates because the PC was turned off” error. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

Option 4 – Try to manually install the Windows Updates

Windows Update Error 0x80092004 might be due to a Windows Update that has failed. So if it is not a feature update and only a cumulative update, you can download the Windows Update and install it manually. But first, you need to find out which update has failed, and to do so, refer to the following steps:
  • Go to Settings and from there go to Update and Security > View Update History.
  • Next, check which particular update has failed. Note that Updates that have failed to install will be displayed under the Status column which has a label of “Failed”.
  • After that, go to the Microsoft Download Center and look for that update using its KB number and once you find it, download and then install it manually.
Note: You can also use the Microsoft Update Catalog, a service from Microsoft that provides a list of software updates that can be distributed over a corporate network. With the help of this service, it can be easier for you to find Microsoft software updates, drivers as well as fixes.
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How to Fix Error 421

What is the Error 421?

Error 421 is a common SMTP (Simple Mail Transfer Protocol) Outlook error message. MS Outlook is one of the best and popular email applications widely used by PC Windows users for sending and receiving emails within and outside workplaces. It is most commonly used in offices by professionals for faster communication. This error may occur while sending and receiving emails on the server. The error 421 messages is displayed in either of the following formats:
“An unknown error has occurred: Server error 421” "Could not send your message. Error 421" 421 4.2.1 : (DYN:T1) http://postmaster.info.aol.com/errors/421dynt1.html 421 4.3.1 Out of disk space for temp file 421 4.3.2 All server ports are busy 421 Downstream server error 421 Fork failed 421 Greylisting enabled, please try later “An unknown error has occurred. Subject ‘Testing’, Account: ‘pop.charter.net’, Server: ‘mail.charter.net’, Protocol: SMTP, Server Response: ’421 Message rejected’, Port: 25, Secure(SSL): No, Server Error: 421, Error Number: 0x800CCC67”

Solution

Restoro box imageError Causes

Some common causes for this critical Outlook error are:
  • PST storage size exceeds 2GB file size
  • Improper ISP settings
  • Slow internet connection
  • PST file corruption
  • Trojan attack and viral infection
This is a critical Outlook error that should be resolved timely. If you delay, it may cause you a great deal of inconvenience. The error code 421 hampers your ability to access your email account, send and receive emails, add new contacts, view emails, calendar entries, and journals. In other words, it just brings your email activities to a standstill locking you out of the account.

Further Information and Manual Repair

To resolve this error code on your system, you don’t always have to hire a professional or call the network personnel to do the job. It may be a critical error but the good news is that it is quite easy to fix. Even if you don’t have technical expertise, you can still repair it. Here are some of the best methods to repair this issue on your system:

1. Change the Server Settings to its Maximum Limit

Try changing your server settings. Here set the inbound connections limit at the maximum limit.
  • To do this, open the Microsoft Exchange Server Administrator utility. The access path of this utility will vary depending on the installation procedure used to set up Exchange Server.
  • Once you open the MS Exchange Server Administrator utility, click the ‘Connections’ icon in the left side navigation pane. Now double click the internet mail service icon in the right side pane. As you click it, the Properties window will open.
  • Now click the ‘Connections’ tab in the Properties window and then click the ‘Advanced’ button. This will open the configuration window.
  • Here reset the number for ‘Maximum Number of Inbound Connections’ to a high number, its maximum limit. After changing the settings, close all open Exchange Server Administrator program windows to successfully complete the process.
After the process is complete, try accessing your Outlook email account again; if it works, then that’s great the error 421 is resolved. However, if it doesn’t, then the problem could be related to viral infection.

2. Download a PST Repair Tool

If the cause of the error is PST files corruption, then not only will you be locked out of your email account, you are also at risk of losing all the data stored in your email account. However, the best way to resolve the error and ensure full data recovery is to download a reliable PST repair tool. By running a PST repair tool on your system, you can resolve the error 421 right away. It recovers your data, repairs corrupt and damaged PST files.

3. Scan Your PC with Restoro.

If viral infection and Trojans are causing the error 421 to pop up on your system, then it is recommended to download and scan your PC with Restoro. This is an advanced, intuitive, and user-friendly PC fixer. It is not just an antivirus but also a system optimizer and a registry cleaner. Unlike common antivirus software that only removes viruses and simultaneously slows down the system’s speed, Restoro removes all types of malicious software on your PC including malware, spyware, Trojans, and viruses, and also boosts the speed of your PC significantly. It is safe, easy to operate, and a quick fixer. It is compatible with all Windows versions. Click here to download Restoro and resolve error 421 today!
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How to Fix KMODE_EXCEPTION_NOT_HANDLED Error On Windows 10

KMODE_EXCEPTION_NOT_HANDLED – What is it?

Some users installing or upgrading to Windows 10 experienced the theKMODE_EXCEPTION_NOT_HANDLED Blue Screen of Death (or commonly known as BSOD) error. This error can be due to different types of things, ranging from software to driver issues. When you experience this BSOD error while trying to install Windows 10, it will prompt you to restart your computer every single time you experience it. In most cases, you will also not be able to proceed with the Windows 10 set-up.

Solution

Restoro box imageError Causes

The “KMODE_EXCEPTION_NOT_HANDLED” error is normally caused by:

  • Hardware incompatibility
  • A faulty device driver or system service

Further Information and Manual Repair

You won’t be able to successfully upgrade or set up Windows 10 if you continue to encounter this BSOD error. Note that this error will always prompt your computer to restart every time it happens, preventing you from completing the Windows 10 set-up.

If you’re not tech-savvy or not capable of debugging this issue, it’s highly advisable to proceed with the basic troubleshooting techniques available in this link.

After troubleshooting, below you’ll find a few solutions to rectify the issue.

Method 1 – Check The Cause of The BSOD Error

Two common causes of the KMODE_EXCEPTION_NOT_HANDLED issue are hardware incompatibility and faulty device driver or system service.

If you experience this error, check first if any of your newly installed hardware is compatible with Windows 10. You can find the required hardware for Windows 10 from this link

If all your hardware is compatible with Windows 10, you might need to check the device driver or system service. Review the bug check message. If any of the drivers you have is listed in the message, either disable or uninstall them before upgrading or setting up Windows 10.

You might also find it useful to check the System Log available in the Event Viewer for other error messages that can help you figure out the driver or device that’s causing the error. Running hardware diagnostics can also be useful.

Method 2 – Disable (or preferably uninstall) Software Before Upgrading

If you’re upgrading Windows 10 from Windows 7 or Windows 8.1, you might need to disable or uninstall the software first. First, try uninstalling your Antivirus utility before starting the upgrade. Restart a few times before starting the Windows 10 installation. If you’re upgrading using the Windows 10 update, make sure that you disconnect from your Wi-Fi or Internet LAN (Ethernet) connection as soon as the download reaches 100% before attempting to start the set-up. Other users also reported that the cause of the KMODE_EXCEPTION_NOT_HANDLED issue is BitDefender. If this is what happened in your case, it will show in the error message such as KMODE_EXCEPTION_NOT_HANDLED (bdselfpr.sys). Users reported that a common solution for this is renaming the file. In the case of BitDefender, try renaming it to bdselfpr.s__. However, make sure to do this cautiously. Sometimes, renaming a file will even do more damage than good.

Method 3 – Disable/Disconnect From Hardware

If you’re connected to any general USB devices (such a smart card reader), disable it. If your computer is connected to other external devices, disconnect all of them. Examples of this include gaming controllers, printers, external hard disk, USB keys, and other non-essential devices).

Method 4 – Other Troubleshooting Steps

Other troubleshooting steps include:

  • Upgrade using an .ISO file, instead of directly upgrading from Windows Update. When you do this, make sure you’re disconnected from the Internet during installation. If the process started and you forgot to disconnected, it’s best to restart the installation.
  • If you’re connected to a domain while trying to set up Windows 10, disconnect and use a local account.
  • If you’re using a SCSI hard disk, connect a thumb drive with the drivers for your storage device. While Windows 10 is setting up, click on the Custom Advanced Option. Using the thumb drive, use the Load Driver command to load the SCSI drive.
  • Another possible cause of this error is due to BIOS incompatibility. BIOS issues can be solved by upgrading your version of your system BIOS. If you don’t know how to do this, refer to your BIOS manufacturer’s website.

Method 5 – Use A Trusted Automated Tool

If you still experience the error after doing the methods above, you might want to try a powerful and trusted automated tool to fix the job.

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