Fix Windows Update Error 0x8024500C

What is Error 0xc0000142?

Error 0xc0000142 can occur in any of the Windows versions and usually occurs when an application fails to properly initialize.

This error can be critical for a computer as it signifies that the system is unstable. Error 0xc0000142 can cause slow performance in a PC, system freeze, startup and shutdown issues, blue screen and errors in installation.

Solution

Error Causes

Windows/Application Error 0xc0000142 can occur because of a number of reasons.

When a computer is an overload with data, or when system files get broken or missing, this error can occur and will result in startup and shutdown issues as well as the blue screen. Another reason, and one which is quite common, is improper computer maintenance.

This will cause a PC to perform slow, system freezes, and installation errors. This error displays ‘failed to initialize’ on either a Windows error box or the blue screen of death.

Further Information and Manual Repair

Error 0xc0000142 can occur at any time, but there are many ways to resolve it. For instance:

1) Clean the Registry

A corrupted registry is one of the major reasons why this error occurs. The registry is used by Windows to store information and settings on the computer, which is why it has a large database.

This database contains emails, wallpapers, saved passwords and much more in ‘file path references’. These allow Windows to run the common files in your system. A registry cleaner can fix any errors in the registry database.

2) Malware Scan

Viruses can cause certain applications to not function properly. Hence, download a strong antivirus and run a deep scan on your system and remove any potential infections and spyware.

3) Reinstall Applications

Non-critical applications in a computer are those that are installed by the user. If error 0xc0000142 displays in any of your installed programs, then you should reinstall these programs. Often applications have damaged or corrupted files which can slow them down. To resolve this, follow these steps:

• From Start, click on Control Panel
• Go to Add/Remove Programs and uninstall the programs
• Restart your PC and reinstall the program

The third step is not recommended in case the error is caused by cmd.exe

4) Repair Windows

If the error is still on display despite following the previous steps, then you can repair Windows. This process allows Windows to retain all your data and information by simply replacing the program files and settings with fresh ones. This can stop error 0xc0000142 by allowing the programs access to use necessary files smoothly and effectively.

If you cannot resolve the error in any of these steps, then there is another way to do so if you have a computer that runs the Microsoft Internet Security and Acceleration (ISA) Server 2000. Follow these steps in order to resolve it:

• Make sure that in Program Files and Microsoft ISA Server, a Clients folder exists. The ISA Server service will run on this folder
• Confirm that Administrators and SYSTEM have Full Control assigned in the Program Files/Microsoft ISA Server/Clients folder
• Confirm that Msplat.txt file is in the Clients folder. You can copy this file from other ISA Server computers if it is missing
• If the Clients folder is damaged or is missing, or if you can’t copy the Msplat.tct file from another ISA Server computer, then reinstall the ISA Server 2000

System restore is usually the go-to tool when something goes bad in Windows, we fire it up and roll back Windows in the state when everything was working fine. But what if Windows does not want to boot? Can we use system restore in that case? The answer to that question would be yes, yes we can.

1. Boot interrupt Windows 10 by starting your PC and as soon as you see the Windows logo; press and hold the power button to force a shutdown.
2. Repeat this 2-4 times and Windows will open up the Advanced Startup Options menu for you.
3. At the Advanced Startup Options screen, select Advanced Options.
4. Select Troubleshoot.
5. Under the Advanced options screen, select System Restore.

or if you prefer, use Windows USB installation.

1. Boot the faulty PC using the Windows 10 installation media.
2. The Windows Setup dialog box will appear.
3. Set the Time and currency format, Keyboard or input method, and the language to install.
4. Click Next.
5. Click on Repair your computer from the lower-left corner.
6. From the Choose an option screen, click on Troubleshoot.
7. Click Advanced Options in the Troubleshoot screen.
8. In the Advanced Options screen, click System Restore.
9. Windows will take some time to prepare System Restore. It may even restart your computer or device.
10. When System Restore is ready, you will be prompted to choose a user account to continue.
11. Select an account that is set as administrator on your Windows 10 computer or device.
12. At the next screen, change the keyboard layout if you want and then input the password for that account.
13. Click the Continue button.

If you find that your headphones are suddenly not working, read on as this post will help you sort out the problem. There could be several reasons why your headphone is malfunctioning, it could be due to an update you just installed, or it could also be due to incompatible operating system, drivers, and so on. Although updates are created to fix bugs on a computer, there are times when it also causes some issues in the computer. One of the issues it causes is the broken headphone. When this happens, the computer will stop playing any audio using the headphones. The problem, as pointed out, could be due to Windows Updates or incompatible or corrupted drivers in the system. To resolve this problem with the headphones, there are several fixes you can check out. Make sure that you follow each one of the given potential fixes below.

Option 1 – Try to set the headphone as the default device manually

There are times when you plug a headphone, it does not toggle the default audio device. Thus, to fix this issue, you have to set the default audio device to the headphones manually. To do that, follow these steps:

• First, right-click on the volume icon located on the system tray.
• Next, select the Open sound settings option to open the Sound section in the Windows 10 Settings app.
• After that, go to the Output section and select Headphones for the “Choose your output device” option. This should fix the problem for you.

Option 2 – Try to update, rollback or reinstall the Audio driver

If the glitch in your audio has something to do with software, chances are it might be related to the audio driver – it could be that the newest version of your Windows 10 does not work well with the old version of the driver. This is why you have to update your audio driver to the newest available version.

• Tap the Win + R keys to open the Run dialog box and then type in MSC and tap Enter or click OK to open the Device Manager.
• Expand the section for the outdated device drivers.
• And then select the outdated driver(s) and right-click on it/them.
• From the drop-down menu, select the Update Driver option and follow the on-screen instructions to install the latest version of the driver.
• Then also click on the option, “Search automatically for updated driver software.
• Restart your PC after the installation.

Note: If updating the Audio driver didn’t work, you can go to the website of your PC manufacturer and look for the support section where you can download the drivers for your computer. You just need to take note of your PC’s correct model and model number so you can find the appropriate driver.

Option 3 – Try checking the status of the audio-related Windows Services

The Windows Services manages audio for all Windows-based programs and if this service is stopped, audio devices, as well as effects, will also be affected and if this service is disabled, any services that depend on it explicitly will fail to start. So you need to check the status of this service. How? Follow the steps below.

• Tap the Win + R to open the Run dialog box.
• Then type in “MSC” in the field and tap enter to open the Windows Service Manager.
• Next, navigate down to the Windows Audio Service and double-click on it to open Properties.
• After that, set the Startup Type to Automatic and then click on the Start button and if it has already started, stop it and then start it again.

Note: You should also make sure that the following Dependency Services are started and have Automatic Startup type:

1. Remote Procedure Call
2. Windows Audio Endpoint Builder

You should also start the Multimedia Class Scheduler and set it on Automatic if you have it in your system. The Multimedia Class Scheduler Service or MMCSS is a service in Windows that allows multimedia applications to get prioritized access to CPU for time-sensitive processing like the multimedia applications as well as prioritized disc access to make sure that the process does not lack data to process.

Option 4 – Try running the Playing Audio Troubleshooter

Since the Windows 10 operating system has the Playing Audio Troubleshooter, you can use this troubleshooter to try and fix the problem with the headphones. You can access this tool in the Control Panel or in the Taskbar Search and even on the Troubleshooters page of Windows 10. Run this troubleshooter and see if it can fix the issue or not.

Option 5– Try to rollback or install a newer Windows Update

As mentioned earlier, the issue with the headphones could be due to a Windows Update. Thus, to fix the problem, you can try to either roll back or install a newer Windows Update.

If you are trying to run or starting a program on your Windows 10 computer and you suddenly get an error message saying, “Error 1061 The service cannot accept control messages at this time”, read on as this post will show you what you can do to fix the problem. This kind of error pops up since the Application Information Service does not respond to the requests to raise applications to Administrator in Windows 10 like the Task Manager, Service updates, and so on. Thus, you won’t be able to run or open apps and will only get stuck with this error. The “Error 1061 The service cannot accept control messages at this time” message is a type of network error that typically occurs when there is a temporary mismatch between the requested control and the state of the service to be controlled. It’s most likely that the service is in a state of start-pending, stop-pending, stopped or it may already be used by another user which explains why this error message suddenly appears. You can encounter this error message on any Windows operation. Here are some of the most common occurrences:

• Debugging a Windows service
• Starting Task Manager
• Starting Registry Editor
• Starting Firewall
• Starting services.msc
• Starting dsm.exe
• Updating services
• Asking for file permissions, etc.

According to Microsoft MSDN, the error occurs because:

“There is a temporary mismatch between the requested control and the state of the service to be controlled. The service may be in a state of start-pending, stop-pending, or stopped. Wait a few minutes, then retry your operation.” If after a few minutes, the error still appears, then you may have to follow the options prepared below.

Option 1 – Try to restart the Credential Manager Service

• Go to the Start menu.
• Then type in “services” in the search box.
• From the search results, right-click on “Services” and select the “Run as Administrator” option.
• Next, look for the Credential Manager Service in the Services window.
• Once you found it, double-click on it to open its Properties. From there, you need to click on the Stop button.
• After that, set the Credential Manager Service to “Automatic” and click on the Start button to restart it.

Option 2 – Try to start the Application Information Service

You can also try starting the Application Information Service to fix the “Error 1061 The service cannot accept control messages at this time”. Just open the Windows Services Manager and make sure that Application Information Service is Started. And if you find that it’s already started, you need to restart it.

Option 3 – Try killing the IIS Worker Process via Task Manager

• Tap the Ctrl + Alt + Del keys and select the Task Manager.
• Next, click on More details to expand the Task Manager and then look for the IIS Worker Process entry which should be displayed in the list under the Processes tab. From there, you can see it in the Background processes. Once you find it, kill its process.
• You can also try to look for the “w3wp.exe” entries and end its process. if you find many entries, right-click on some of them and select the End task option from the context menu.
• Now restart your PC. That should fix the problem.

Task View feature inside Windows 11 is actually a great feature, letting you quickly view open windows and virtual desktops. How Task view itself could be reached with keyboard shortcut combination of ⊞ WINDOWS + TAB some users will prefer this way of using it and thus button on the taskbar is something you do not want or need. There is a very easy way to remove mentioned button and I will show you how to do it. Right-click the taskbar button itself and click on Hide From Taskbar. That’s it, you have done it. Now in order for you to bring it back if you change your mind, you will have to do some extra steps but it is nothing difficult. Right-click on the taskbar and click on Taskbar settings, you will be lead to Personalization > Taskbar. Inside locate Taskbar Items and switch Task View to ON, you will see the Task View button right away showing itself again.

As you know, the USB security keys are a secure medium to validate a lot of components in a computer. They can be used to log in to Windows 10. Now with the advancement of APIs, you can authenticate across the website as well using the same key. However, there are times when it may not work and it could be caused by several factors. It could be due to corrupted or incompatible drivers or it could also be due to compromised integrity of the key, and many more. So if you happen to encounter an issue with the USB security key on your Windows 10 computer, then there are several potential fixes you can try. You can try toggling the Internet Options settings or reinstall the respective USB drivers. You could also try changing the PIN of the security key or disable the antivirus program on your computer or troubleshoot the web browser. Refer to the potential fixes provided below to fix the problem.

Option 1 – Try to toggle the settings of the Internet Options

• In the Windows Search box, search for Internet Options to open it.
• Next, go to the Security tab and drag the security slider to the lowest possible security for all the given zones.
• After that, click on OK to save the changes made and close the Internet Options.

Note that this option is only a temporary measure as it can make your computer vulnerable. Make sure to press the Reset all zones to default level button.

Option 2 – Try to update or reinstall the respective drivers

If updating the drivers of the device did not fix the problem with the USB security key, you can try to update or reinstall the Universal Serial Bus Controller drivers instead of using the Device Manager. Refer to the following steps:

• First, click the Start button and type “device manager”.
• Then click on the “Device Manager” from the search results to open it.
• From there, look for the “Universal Serial Bus controllers” option and then right-click on each one of the USB drivers and select the Update Driver from the menu.

Note: If it is a regular USB drive, then it will be listed as a USB Mass Storage Device but if you have a USB 3.0 device, then look for a USB 3.0 Extensible Host Controller.

• Restart your PC and then click the “Search automatically for updated driver software” option.

Note: If updating the USB Controller drivers didn’t work, you can try to reinstall them instead.

Option 3 – Try to change the PIN of the security key

If the first two options didn’t work, you can try changing the PIN of the security key. There are instances when the PIN for the security key might have been corrupted. Thus, resetting it can help you resolve the problem.

Option 4 – Temporarily disable Firewall and third-party antivirus

Firewall and antivirus programs are known to block the proper functioning of the USB security key. Thus, your antivirus or firewall programs might be the reason why you can’t download anything on your Windows 10 computer. To isolate the issue, you need to temporarily disable both the Firewall and antivirus programs and then check if you can now download anything from the internet. Do not forget to enable them again as disabling them can leave your computer vulnerable to cyber threats.

Option 5 – Try to troubleshoot the web browser

Troubleshooting your web browser can also help you fix the USB security key problem. You can do that by checking if your web browser supports the security key and you can do that by checking on the official website of your browser. You can also try to update your web browser to its latest version but if it didn’t help, you can try to reinstall it or switch to another web browser.

Although there are several Windows 10 devices that are touchscreen-based, the mouse still remains to be an important part of usage for many users especially the ones who do some hardcore work on their Windows 10 computers or laptops. If you’re one of the users who often edit images or videos either for fun or work, using Touch is difficult as it’s a bit hard to drag on the screen so nothing really beats the mouse. However, as awesome as the mouse is, there are times when you encounter issues while using it. One of these issues is when your mouse pointer lags or freezes so in this post, you can try out a few tips that can help you resolve the issue.

Option 1 – Clean both the mouse and the mousepad

It might sound silly but it is a fact that either the mouse or the mouse pad themselves is the problem. Even though mouse balls are long gone, the laser lights that replaced them are not immune to some dirt which is why you need to clean the bottom of the mouse and then clean the mouse pad afterward.

Option 2 – Try changing the USB port

This is another basic thing you can do to resolve the problem since there are instances when USB ports where either your mouse is connected have gone rogue so you need to try switching to a different port and then see if the problem’s fixed or not.

Option 3 – Switch back to the default settings of the mouse

Switching your mouse back to its default setting is always a good idea since you are dealing with a pointer issue. To go back to the default settings of the mouse, here’s what you have to do:

• Click on Mouse and Touchpad.
• Next, click on Additional Mouse Settings located in the right pane.
• After that, click on the “Use Default” option under the Pointer tab.
• Then click on Apply and OK to save the changes made.

Option 4 – Try disabling Smooth Scrolling

You have to slow down both the horizontal and the vertical scrolling of the mouse in the settings which are called “Smooth scrolling”. This will help if you think that the websites you are visiting scroll up and down way too fast.

Option 5 – Try to update or rollback mouse drivers

If the first few options didn’t work for you, then it’s time to either update or roll back the mouse drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated the mouse driver then you need to roll back the driver. Whichever applies to you, refer to the steps below. The problem may be caused by a corrupted or outdated driver. So you have to update or reinstall the mouse driver. How? Follow these steps:

• Open the Devices Manager from the Win X Menu.
• Then locate the Mouse and other pointing devices and right-click on the mouse driver to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, disconnect the mouse and plug it back in to reinstall the mouse driver.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

Option 6 – Try to check if your laptop is turning off the mouse

In case you don’t know, the power management can turn off the devices that are not in use to save battery power if you use a laptop. And this can also happen on USB-based devices like the mouse. Thus, you need to verify if your laptop is turning off the mouse.

• Go to Device Manager > Universal serial bus controllers > USB Root Hub > Power Management.
• After opening Power Management, uncheck the “Allow the computer to turn off this device to save power” option.
• If you have lots of USB Root hubs, you can try changing each one of them and see if it works or not.

Option 7 – Try updating the Graphics Drivers

• Tap the Win + R keys to launch Run.
• Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. If you see a red or yellow sign that shows up against the driver, right-click on the driver’s name and select “Update Driver Software” or “Uninstall”. And if you find any “Unknown device”, you need to update it as well.
• Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
• Restart your PC.

Note: You also have the option to go directly to the website of your graphics card manufacturer and check if there’s a new update – if there is, download it.

Option 8 – Try setting the No Delay option for Touchpad

If you are using a laptop that’s touchscreen-based, you can try setting the delay to zero in the settings. To do so, simply go to Settings > Devices > Mouse and Touchpad. From there, you can set the delay before clicks to “No Delay”.

Device drivers are needed in order for the hardware and software to communicate in an operating system. Some of these drivers are digitally signed. These kinds of drivers are drivers that are signed by their issuing authority in a way that the end-user or any third party won’t be able to modify them. And there are times when you encounter an error that says, “Windows requires a digitally signed driver” when you try to install or update device drivers. Driver Signing is the process of associating a digital signature with a driver package. Digital signatures are used in Windows device installations to verify the identity of the vendor providing the driver packages as well as to verify the integrity of the driver packages. All the drivers you usually install on your PC from Windows Update, Original Equipment Manufacturers, or some other third-party driver download software and so on must be verified digitally by Microsoft through the digital signature. A digital signature is an electronic security mark that verifies the publisher for the driver and all the relevant information related to it. That’s why Windows won’t run a driver if it isn’t certified by Microsoft, be it a 32-bit or 64-bit system – this is called the Driver Signature Enforcement. The only Kernel-mode drivers that Windows 10 will load are the ones that are digitally signed by the Dev Portal. However, the changes only affect the new installations of the operating system with Secure Boot on while the non-upgraded fresh installations would require drivers that are signed by Microsoft. The “Windows requires a digitally signed driver” error indicates that the driver you are trying to update or install hasn’t been signed digitally by the issuing authority, preventing you from installing or updating it. To resolve this issue, you can try to update the drivers directly from the manufacturer’s site. You could also disable driver signing via Group Policy Editor.

Option 1 – Update the device drivers directly from the manufacturer’s site

The reason why you’re getting the “Windows requires a digitally signed driver” error in the first place is that you might have downloaded the drivers from external media. It could also be that the drivers didn’t update for some time now and the issuing authority changed its policies. Thus, you can try to update the drivers straight from the manufacturer’s website and install them. If this option didn’t work, then you’ll have to disable the driver signing or its recognition in Windows 10. Keep in mind that doing so is not advisable if you have to use the concerned driver.

Option 2 – Disable driver signing via Group Policy Editor

• Tap the Win + R keys to open the Run utility and type “gpedit.msc” in the field and tap Enter to open the Group Policy Editor.
• After that, navigate to this policy setting: User configuration > Administrative templates > System > Driver installation
• Next, double click on the “Code signing for device drivers” entry located on the right pane to open its properties where you’ll see the following description:

“This setting determines how the system responds when a user tries to install device driver files that are not digitally signed. It establishes the least secure response permitted on the systems of users in the group. Users can use the System in Control Panel to select a more secure setting, but when this setting is enabled, the system does not implement any setting less secure than the one the setting established. When you enable this setting, use the drop-down box to specify the desired response. “Ignore” directs the system to proceed with the installation even if it includes unsigned files. “Warn” notifies the user that files are not digitally signed and lets the user decide whether to stop or to proceed with the installation and whether to permit unsigned files to be installed. “Warn” is the default. “Block” directs the system to refuse to install unsigned files. As a result, the installation stops, and none of the files in the driver package are installed. To change driver file security without specifying a setting, use System in Control Panel. Right-click My Computer, click Properties, click the Hardware tab, and then click the Driver Signing button.”

• Now select the radio button for “Enabled” and select Ignore from the drop-down menu under “When Windows detects a driver file without a digital signature”.
• Then click on the Apply and OK buttons to save the changes made. This will get rid of the “Windows requires a digitally signed driver” error but take note that this will also make your system less secure.

Blizzard is one of the most beloved game company which brought some of the most and greatest titles in PC gaming. Blizzard has released its own launcher in which you can launch games, sadly sometimes launcher does not want to work and fails to connect. If this happens to you be sure to:

1. Reset your network devices to make sure your router hasn't become flooded with data.

   Power cycling your modem and router allows them to reset and re-establish a connection to your ISP. Follow these steps to completely power cycle the devices in your network connection:Note: If your modem has a battery backup, you will need to take the battery out or use the reset button on the modem.

   1. Shut down all computers connected to the modem/router.
   2. Power down and unplug the modem and the router if you're using one.
   3. Allow to sit for 60 seconds unplugged.
   4. Plug in and turn on the modem and router, and allow them to completely boot up until the front panel connection lights on the modem show a steady connection.
   5. Start the computer and allow it to completely boot up.

2. If you're using a wireless connection, optimize your internet connection to rule out a connection issue.

   If you're experiencing issues with your low-speed or wireless internet connection, follow the steps below to troubleshoot the problem.

   1. Try plugging your computer directly into your modem.
   2. Shut down other programs that access the internet, such as other games or download programs.
   3. Satellite, mobile phone, and WiMax internet connections are not stable connections and may cause further connection issues when playing Blizzard games. If possible, consider switching to a more stable connection.

3. Update your drivers and operating system to resolve any compatibility issues.

   Out-of-date drivers and operating systems can cause a variety of issues and are one of the first things to check when a game is having problems. The instructions below will help you check and update your drivers.

   • Even new computers can have out-of-date drivers and operating systems because updates are released routinely.
   • Some games and programs might run fine on a system with old drivers, but outdated drivers can still create technical issues with specific games or programs.
   • Check our supported video cards articles to make sure your hardware is compatible:
     • World of Warcraft
     • Hearthstone
     • StarCraft II
     • Diablo III
     • Heroes of the Storm
     • Overwatch

   Refer to the steps below to update drivers and software for your operating system.

4. Release and renew your IP and flush your DNS to resolve any network conflicts.

   1. While on the desktop, press Windows Key and type CMD.
   2. Right-click Command Prompt and select Run as administrator.
   3. Type ipconfig /release in the command prompt.
   4. Wait a few seconds for a reply that the IP address has been released.
   5. Type ipconfig /renew in the command prompt.
   6. Wait a few seconds for a reply that the IP address has been re-established.
   7. Type ipconfig /flushdns in the command prompt.
   8. Close the command prompt and attempt to make a connection.

5. Close all other applications to resolve software conflicts and free up resources.

   Before trying the steps below, close unnecessary programs and restart your computer. Identify Problematic Startup Items

   1. Press Ctrl+Shift+Esc to open the Task Manager.
   2. Click More Details.
   3. Select the Startup tab.
   4. Right-click on each item and select Disable.
   5. Restart the computer.

   If this resolves the issue, enable the startup application one at a time to determine which one is causing the problem. You will need to restart between each application you enable. Note: To re-enable startup applications, follow steps 1-4 and select Enable.

6. Delete the Battle.net Tools folder to automatically rebuild outdated or corrupt files.

   1. Close Blizzard processes.
      1. Press Ctrl + Shift + Esc to bring up the Task Manager.
      2. Click the Processes tab.
      3. Select all Agent, Blizzard Battle.net desktop app, and game processes, and click End Process.
   2. Navigate to the folder containing the Battle.net directory:
      1. Press Windows Key + R to open the Run dialogue.
      2. Type C:\ProgramData\ into the Open field and press Enter.
   3. Delete the Battle.net folder.
   4. Run Battle.net and update the game to see if the issue persists.

   If the error persists after you try these steps, another program may be causing the problem. Restart your computer and delete the Battle.net folder one more time.

   Note: The above steps may cause the Blizzard Battle.net desktop app to forget game install locations. If your games can’t be found, you will see Install on the Blizzard Battle.net desktop app game tab instead of Play. To find your installation, click Locate this game or run the game launcher.

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

Error 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!