Fix STOP 0XC000021A, error in Windows 10

Error 451 - What is it?

This is a typical SMTP error code. SMTP is the abbreviation for Simple Mail Transfer Protocol. It is an internet standard for email transmission. In other words, SMTP is a text-based protocol in which the sender communicates with the mail receiver by issuing commands and receiving a response code. The SMTP error 451 is displayed in the following format:

‘451 Requested action aborted: local error in processing’

This error message indicates that the program cannot send more messages and the server has hit the limit. This is because some mail servers have limits. The sever stops the task of sending and receiving emails when this limit is achieved.

Solution

Error Causes

The causes of error 451 include:

• Server limit reached
• Email rejection due to a remote anti-spam filter
• Request denied by the server
• Viral infection

If you heavily rely on email communication with your business partners and colleagues, then it is advisable to immediately resolve this issue without any delays. Though this error is not fatal, you should repair it right away to avoid inconvenience. SMTP error code 451 can hamper your ability to communicate via email.

Further Information and Manual Repair

Here are some of the best, easy, and effective DIY methods that you can try to repair error code 451 on your PC.

Method 1

To fix this error, simply follow these steps:

• login to Linux SSH
• Open the file /etc/localdomains
• Nano/etc/localdomains and then add the domain name that is triggering email sending error
• Now reboot your PC

This will hopefully resolve the issue. Nonetheless, if the error code still persists, then try other methods given below.

Method 2 - Configure List Settings to change the server limit.

This can be done by accessing the List Settings then Outgoing Mail Server (SMTP) and then the Limit Feature. By accessing the limit feature, you can easily adjust the program to any limit of your choice. Configure the limit and save changes. Reboot PC to activate the changes made.

Method 3 - Scan and Remove Viruses.

This error code can also be triggered due to viral infection. If this is the cause, then simply download an anti-virus on your PC. Scan the entire system and remove all detected malicious programs like Trojans, malware, adware, viruses, and spyware. This will repair the error 451 on your system.

Method 4

If the error still persists, then contact your SMTP provider to check the situation and resolve it. There is a possibility the error is generated from the SMTP provider’s end.

If you encountered an error message that says, “Unhandled exception has occurred in your application”, when you start your Windows 10 computer, read on as this post will guide you on how you can fix it. This kind of error usually appears in a Microsoft .NET Framework window and it mostly pops up as soon as you turn on your computer. Here’s the complete context of the error message:

“Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.”

When this error occurs, your computer may freeze or display other suspicious behavior at times. Either way, there are several options you can check out in this post to resolve this issue, so read on. This kind of error could be caused by several factors. It could be due to your antivirus program or other third-party programs installed on your computer. It is also possible that the installation of the Microsoft .NET framework id corrupted or some of its installation files are corrupted. Thus, to fix the error, there are a few suggestions you need to follow such as:

Option 1 – Try to temporarily disable your anti-virus program

As mentioned, the error could be due to the antivirus program or the Windows Defender Firewall installed on your computer. Thus, disabling them or any security software installed in your computer is always a good idea you can try when you’re not able to access the shared drive in your computer. There are times when you encounter problems like the “Unhandled exception has occurred in your application” error due to interference of antivirus or security programs. Thus, you have to disable both your antivirus program in the meantime and check if it fixes the error or not.

Option 2 – Put your computer in a Clean Boot State

As pointed out, it is possible that some third-party program or service is the one that’s behind the problem. To isolate this possibility and to identify the culprit, you have to put your computer into a Clean Boot State. To do so, follow the steps below.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• Once your computer has restarted, check if the error is now gone. If it is, then the culprit is some third-party program. Thus, you have to enable the third-party programs one by one to find out which one of them is causing the the “Unhandled exception has occurred in your application” error.

Option 3 – Try to run a System File Checker scan

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files that might be the cause why you’re getting the “Unhandled exception has occurred in your application” error. To run the SFC command, follow the steps given below.

• Type “cmd” in the Start search and then right-click on the appropriate search result.
• Next, select “Run as administrator” to open Command Prompt with admin privileges.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Now restart your computer and see if the problem is fixed or not.

Option 4 – Install and update Dependencies

There are times when programs and applications need to have drivers and supporting software installed for them to properly work. Although the installation usually takes care of it, it’s time for you to do some manual check especially if you are getting this issue of abnormal program termination.

• Install some qualified drivers – A number of high-end games and applications need to have correct and valid drivers for them to work. They just don’t work with general drivers though. Microsoft has this Windows Hardware Quality Labs testing also known as WHQL testing which makes sure that drivers meet the correct experience and pass through the proper testing before certification. Thus, when installing drivers, you need to ensure that they are qualified drivers for your Windows 10 PC.
• Download and install or Update DirectX – As you know, Microsoft DirectX is a suite of technologies developed by Microsoft to provide hardware acceleration for heavy multimedia applications like HD videos and 3D games. Since you are using Windows 10, you have the DirectX 12 version while the earlier Windows versions use the DirectX 11 version.
• Install the Microsoft DirectX End-user runtime – The Microsoft DirectX end-user runtime gives updates to version 9.0c as well as previous versions of DirectX. To install it, click on this link and download it.
• Update or install the .NET framework – The .NET framework is used by games and applications during development which means that without the runtime files that are installed in your computer, it definitely won’t work. Thus, you need to install or update this framework. You can also use the .NET setup verification tool to verify it.

Kernel Mode Heap Corruption is the error message that the Windows operating system throws when it encounters a blue screen of death or BSOD error during PC startup or launching specific programs such as video games. It is mainly caused due to software conflicts, driver issues (especially graphics card driver), and computer hardware malfunctioning. The good news is that this error is easily fixable. Follow the next steps in order to fix the error:

1. Rollback graphic card driver

   Press ⊞ WINDOWS + X to open Windows secret menu and click on device manager Expand Display adapters section Right-click on your GPU and choose properties In properties window go to the driver tab and click on Roll back driver Select the reason for operation and click on YES Reboot your PC

2. Update corrupted and outdated drivers

   How is this error mostly driver issue, updating and fixing bad drivers can fix it very easily. As in the previous step, you will need to open the device manager and go through all drivers and manually check for updates for each one, update as necessary or reinstall ones you might think have gone rogue. If you are not experienced enough with this kind of task install some automatic solution for this task like DriverFix

3. Check for software issues

   If this error started happening after the installation of new software it is very likely that the application is causing problems. Try uninstalling or disabling the application to see if it will fix the issue. You can also boot Windows in safe mode to see if the error will happen there, if Windows is working fine in safe mode, it is likely that issue is on the software side.

4. Run SFC scan

   Press ⊞ WINDOWS + X and choose Command prompt (admin) In command prompt type in sfc /scannow and press ENTER Wait for the process to be finished and Reboot the system

What is the Registry Error Code 19?

Code 19 is a Windows PC error code that indicates a damaged or corrupt registry. This code usually appears when trying to start a connected device, the DVD/ CD ROM drive. Code 19 is a type of Device Manager Error code. When you experience Code 19, the error message is displayed on your Windows screen in either of the following formats:

"Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. To fix this problem you should uninstall and then reinstall the hardware device. (Code 19)"

"Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. To fix this problem you can first try running a Troubleshooting Wizard. If that does not work, you should uninstall and then reinstall the hardware device. (Code 19)"

You might encounter other error messages such as error code 42.

Error Causes

Typically the underlying cause of this error code is problems in the registry. The error should be fixed timely without any delays before the damage sets in. Registry issues are critical PC errors. If not resolved it can lead to system freeze, crash, and failure. You are most likely to lose all your important data.

Further Information and Manual Repair

If you have come across this error on your computer, you don’t need to panic. Though this is a serious issue the good news is that it is easy to resolve. You don’t have to be a computer programmer, technically sound or hire a technician to fix the error on your system. Here are a couple of ways to work your way out of this problem:

1. Uninstall and then Reinstall the  DVD/CD ROM Drive

For this here’s what you need to do: simply click on the start menu, and type Device Manager in the search box, and press enter. When the device manager window opens locate the DVD/CD ROM drives. Click on the + sign to expand it. Now right click on the DVD drive click uninstall. After doing this, restart your PC. On the restart, Windows should automatically detect and reinstall the DVD driver. Once the driver installation is complete now see if the DVD drive works. If the error still appears, then you need to repair the registry by deleting the corrupt registry entries. You can download drivers automatically by using a tool such as Restoro.

2. Trouble Shooting Method to Delete the Corrupt Registry Entries

To remove the corrupt registry entries, go to Start and select Run. Type ‘Regedit and press enter to open the registry editor windows. To continue you may be asked to enter the administrator password, insert it to proceed. Now the registry window will be displayed. Here locate the registry key HKEY_LOCAL_MACHINE, then navigate to the following sub registry key HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318} Here you will see the upper filters registry entry in the right pane. Right-click on the upper filter and select delete. You will be prompted for the confirmation for deletion. Click on the yes tab to confirm. Exit the editor and restart your computer. If you are not technically sound, this may be a little confusing for you, and besides it does not guarantee to resolve all the registry issues on your PC so chances are that Code 19 error may reappear in a short time. To resolve registry issues for the longest time and ensure that errors like Code 19 don’t pop up every now and then, you need to perform proper and in-depth registry cleaning. For this, it is advisable to download Restoro.

Socket Error 10013 - What is it?

Socket error 10013 is an error code that often pops on the screen when you try to access the server. This error code restricts your permission to access. It shows that your permission request was denied. The error message is displayed in the following format:

“Socket.error: [Errno 10013] an attempt was made to access a socket in a way forbidden by its access permissions”

Solution

Error Causes

Narrowing down a particular reason for the cause of socket error 10013 is difficult, typically because this error code can be generated due to several reasons. Here are some of the common reasons for its occurrence on your PC:

• High-security set up- Firewall or an antivirus program
• Too many functions tied to the same driver confuses the socket
• Outdated drivers
• Malware

The good news is that the socket error 10013 is not fatal. However, it is advisable to fix and resolve the issue to avoid inconvenience.

Further Information and Manual Repair

Here are some of the best, quickest and easiest methods to work around the problem and resolve socket error 10013 without any hassle or delay.

Method 1 - Turn off Firewall

Believe it or not, a high level of internet security measures like Firewalls and anti-virus programs are a common cause of socket error 10013. Firewalls are made to protect a computer from harmful connections but sometimes it may also restrict server connections, considering them as a threat to your system security. Due to this, permission access is adamantly denied. To resolve this issue on your PC, the best way to go about is to turn off your Firewall or any other anti-virus programs installed on your system. Once you turn off these programs, try accessing the server again. The majority of the time the issue is resolved by carrying this step. Nonetheless, if the error still persists, try the methods given below.

Method 2 - Check the Permissions section of the Firewall Program

Another way to resolve this is to check the permission section of the Firewall program and check for the server. If the server is not listed, contact the Internet Service Provider (ISP) and ask for help in adding the server to the list.

Method 3 - Update Drivers

The outdated driver may sometimes be the reason for the socket error 10013.  The socket may no longer use the drivers installed on your PC which is why permission to access the server is not granted. When this is the reason, try updating the drivers to resolve. For new drivers, visit the software manufacturers’ website, download, and install.

Method 4 - Scan for Viruses and Malware

Another alternative is to scan for viruses and malware. Sometimes the cause for the error is a viral infection. Therefore, remove them to resolve. The best way is to download Restoro. This is a user-friendly and next-generation PC Fixer embedded with 6 scanners including a powerful anti-virus. It scans your entire PC and removes all types of viruses including malware, adware, spyware, and Trojans in seconds. Click here to download Restoro.

If you are following the latest gaming trends and spend a lot of time on social media, watching streams, etc. you might be under impression that gaming as a hobby is very expensive. If you plan to play the latest games on a very large screen in their highest setting that might be true but if you do not care about that you can still play games and spend much less money on them.

That being said we are here to share with you some tips and tactics on how to play good games with minimum money spent.

Do not buy games the moment when they are released

Buying a game on its launch date is maybe the worst and most expensive thing you can do. Games have their highest price on launch day but sadly with the current state of the industry, they are in their worst state as well. Games eventually became better over time after patches are released but so does their price drops after the hype has calmed down. So if you really must have some specific game on its launch day, go for it but know that by doing so you are getting the worst version of the game for its higher price.

Wishlist games and wait for the sale

All services today have a wishlist, very good and money-saving tactic is to wishlist interesting titles and wait for them to be on the sale. Services will usually have the option of sending you an email once your wishlist titles are on sale so you will be notified once they do. A good tactic as well is to wait for large sales like for example summer, winter, easter sales, or many other seasonal ones.

Get free games

Some online stores are offering free games from time to time and some are always offering some titles as gifts in order to get customers to their platform. EPIC has become famous for gifting some great titles over the past years completely for free and there are a lot of free-to-play games on each platform that you can play.

Get second-hand PC

Having a new computer is great but if your budget is tight you might consider getting your PC as a second hand instead of the new one. Hardcore games will switch components more frequently than your typical users and usually the components will be sold cheaper and be more affordable.

Play games on some older devices in general

Many games today are available on many platforms not only just on your typical PC. Same titles are available on your mobile phones, tablets, and even on your Android TV. Many titles will not even require the latest technology or monster of a computer in order to run them. You can also lower game settings and play many games on lower hardware if you do not mind not having top graphics settings.

Play over the cloud streaming

If you are very tight on budget but want to enjoy new games in their full glory there is always the option to play games via a cloud streaming service, it is not exactly a mega cheap option since it has a monthly fee but it is cheaper than some high-end gaming computer. If you combine this with the game pass you can enjoy the latest games with high-quality settings and pay it on a monthly basis.

As you know, the Windows 10 operating system has support for a dedicated high-end graphics processor that brings in capabilities inside to support Graphics Cards from NVIDIA or AMD. This helps the operating system to function in a much better way by segregating the graphics-intensive operations from the CPU to a dedicated processor. However, there are times when it also experiences some issues that lead to some errors like the “Failed to create a graphics device” error. It is possible that your computer has more than one screen or graphics card which is why you’re getting this error. To fix it, you need to try reinstalling DirectX or reinstall the Graphics Card driver. You could also try to manually check the hardware or power cycle of your computer. To start troubleshooting the “Failed to create a graphics device” error, follow the given suggestions below.

Option 1 – Try running the DirectX Diagnostic Tool

Since the error has something to do with the DirectX Graphics APIs, you can run the DirectX Diagnostic tool to resolve the problem.

Option 2 – Try updating or re-installing DirectX

If the DirectX Diagnostic tool didn’t work, you can try to update or reinstall DirectX instead. This can help in fixing the problem because when you reinstall or update DirectX, it will replace the incompatible or corrupted components of DirectX from your computer.

Option 3 – Update or reinstall the Graphics card drivers

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in 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. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

Option 4 – Try to physically check the hardware of your computer

You might also want to check the physical status of the hardware in your computer. You can clean the dust off the hardware components like the Graphics Card of the computer. In doing so, you have to use a small blower or you could also use a soft cloth and run the components gently. Make sure that you don’t damage any parts with moisture or cause harm to any circuits while you carry out this task.

Option 5 – Try to power cycle your computer

You could also try to power cycle your computer to fix the error. To do that, you have to turn off your computer in a way that the power is completely cut off and all the fresh configurations of files are loaded when your computer is booted up. The first thing you have to do is to shut down your computer and if you are using a laptop with a removable battery, you must remove the battery for a couple of minutes before you plug it back in and boot your laptop. On the other hand, if you are using a desktop computer, press and hold the power button until the CPU goes off and take out the power cable for a minute or so and then plug it back in. Boot your computer and see if the error has been resolved.

If you own an iPhone, iPad, or iPod you might be aware of the phenomenon of connecting and disconnecting your device. In one moment device is connected and then it somehow loses connection and you have to plug in back again to be recognized. In this troubleshooting guide, we will address ways to eliminate this issue and to connect and have your devices working properly. We will go from the most common ones to the most uncommon so it is advisable to try solutions in order to how they are presented.

1. Check cable

   The most common issue with this kind of behavior comes from a broken cable if you have the opportunity try another working cable to see if the device will behave differently. If everything is working fine with another cable, the issue is in the previous cable.

2. Check USB ports and Cable Jack

   Usually, it is a cable issue, but it can also be a USB jack on cable or even a USB port on a PC, try putting the jack into another port to see if this will solve the issue.

3. Check device settings

   From updates on your device comes a change of setting about privacy which can reflect on connection with the computer. In order to eliminate this, you will need to reset your device. Go to device settings and go to general Scroll down until you find the reset section and go into it In the reset, section click on reset location and privacy You will have to authenticate using your pin/passcode in order to complete the reset function Enter your passcode (or use any other authentication method you have chosen) and you can now reset the Location and Privacy settings. Click on reset Connect the device to PC and choose trust this device

4. Update iTunes

   Outdated iTunes can also be a problem with this particular issue. Go to the apple website and download the latest version of iTunes or updating it via apple updater.

If you’re having some problem browsing multiple websites on the Firefox browser on your Windows 10 computer, then this post might be of help. One of the most common problems you could encounter in Firefox is mostly related to HTTPS and one of them is the MOZILLA PKIX ERROR MITM DETECTED or ERROR SELF SIGNED CERT or SEC ERROR UNKNOWN ISSUER error which means that Firefox was unable to trust certificates issued on secured websites. If you encounter the MOZILLA_PKIX_ERROR_MITM_DETECTED error in Firefox, this indicates that something in your network or system is interrupting your connection and injecting certificates and when that happens, Firefox won’t trust it. In such cases, one of the culprits is malware. Malware will try to replace a legitimate certificate with its certificate. Another cause is security software where it keeps a tab on a secure connection and creates a false positive, for instance:

“In Microsoft Windows accounts protected by Family Safety settings, secure connections on popular websites like Google, Facebook and YouTube might be intercepted and their certificates replaced by a certificate issued by Microsoft in order to filter and record search activity.”

And if you are connected to a corporate network, there might be a monitoring/filtering product that could be replacing certificates. Moreover, there are also users who reported getting this issue when they use the Nightly version of Firefox. And if that’s the case, you have to try accessing secure websites using only the stable build especially when it comes to payments. However, if you are not doing that, then here are some options you need to check out.

Option 1 – Try turning off HTTPS Scanning on your security and antivirus programs

Each security-based software has a security option that allows you to turn off the HTTPS scanning functionality. They may be available under different names such as HTTPS Scanning, Scan SSL, Show safe result, Do not scan encrypted connections, etc. Find what is applicable for your security or antivirus software and then try turning it off temporarily and see if it helps in fixing the MOZILLA_PKIX_ERROR_MITM_DETECTED error in Firefox.

Option 2 – Try to disable security.enterprise_roots.enabled

The next thing you can do if the first option didn’t work is to disable security.enterprise_roots.enabled which is an HTTPS certificate check on Firefox. Note that this is not recommended but you have to at least try in order to fix the error.

• Open Firefox and then type “about: config” in the Firefox address bar and hit Enter.
• After that, if an info message appears, confirm it.
• Next, search for the security.enterprise_roots.enabled preference and once you found it, double click on it.
• Then change its value to true and restart the Firefox browser once. This will import all the custom certificates from the other security software into Firefox. As a result, it will make sure to mark those sources as trusted and you won’t get the MOZILLA_PKIX_ERROR_MITM_DETECTED error.

You might be trying to play music files using the Windows Media Player, but were unable to do so since you encountered an error saying, “Windows Media Player Error – Server Execution Failed” error. If you encountered this error, worry not for this post will guide you on how to fix it using some potential fixes. In the error message, the “Server execution failed” indicates that the “wmplayer.exe” is still running or shutting down at that point and it is possible that it is stuck which is not able to close properly. To fix this error, there are several potential fixes you can try. The first one is to run the Video Playback troubleshooter. While you could also try to disable the WMP Network Sharing Service or register both the jscript.dll and vbscript.dll files. For more information, refer to the options provided below.

Option 1 – Try to run the Video Playback troubleshooter

The first thing you can do to fix the problem, you can try to run the Video Playback troubleshooter instead. To run it, simply go to Settings > Update & security > Troubleshoot. From there, scroll down until you see the Video Playback option and then click on the “Run the troubleshooter” button to get started. This troubleshooter will detect and automatically fix any problems related to video playback so it should help fix the error.

Option 2 – Try to disable the WMP Network Sharing Service

If the Video Playback troubleshooter didn’t work in fixing the problem, the next thing you need to do is disable the Windows Media Player Network Sharing Service. The WMP Network Sharing Service is used to share the libraries of the Windows Media Player to other users on the network as well as media devices using the Universal Plug and Play. And since you are not using any network here, then you can disable this service to fix the problem. How? Refer to the given steps below.

• Tap the Win + R keys to open the Run dialog box and type “services.msc” in the field and tap Enter to open the Services Manager.
• Next, look for the Windows Media Player Network Sharing Service from the list of Services and right-click on it.
• After that, click on the Stop option and see if it fixes the Windows Media Player error.

Option 3 – Try to register the jscript.dll and vbscript.dll files

• Tap the Win + X keys and from the menu select the Windows PowerShell (Admin) option to open an elevated Command Prompt.
• Next, type this command to register the jscript.dll file and click on the confirmation box: regsvr32 jscript.dll
• After that, execute the regsvr32 vbscript.dll command to register the vbscript.dll file.
• Once you’re done, these DLL files will be re-registered and should fix the Windows Media Player error.