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Fix Unable to terminate the process Error in Windows 10

There are times when you may find it hard to kill a particular process in the Windows Task Manager and every time you try to do so, you will only get an error message saying, “Unable to terminate the process, The operation could not be completed, Access is denied”. If you are one of the users who is constantly getting this error, read on as this post will provide you with a couple of options you can try to resolve the problem.

Refer to the given instructions below if you are unable to terminate a process in the Task Manager but before you proceed you need to restart your PC and then try killing the process again, if you’re still not able to do it, you need to follow the options laid out below.

Option 1 – Try using Taskkill

  • Open the Command Prompt as admin from the WinX Menu.
  • After opening Command Prompt, type in the following command and tap Enter to execute it:

taskkill /IM "processname" /T /F

processname – it is the name of the process which you can see on the Details tab of the Windows Task Manager.

/IM – it is the one that specifies the image name of the process, which follows, that is to be terminated.

/T – it is the one that kills not just the main process but also the child process.

/F – it is the one that terminates the process forcefully.

Option 2 – Try using the WMIC

  • Open Command Prompt as admin from the WinX Menu.
  • From the Command Prompt window that opens, type in the following command and hit Enter to execute it:

wmic process where name='processname.exe' delete

Note: In the given command, you need to replace “processname.exe” with the name of the particular process you want to terminate which is found in the Details tab of the Windows Task Manager.

Option 3 – Try using PowerShell

  • The first thing you have to do is open an elevated PowerShell prompt.
  • From there, type in the following command and hit Enter to execute it:

kill -id pid

Note: In the given command above, “pid” is the Process ID number of the process you want to terminate. And for you to identify this number, you need to open the Details tab of the Windows Task Manager once again and take note of the number against the process you want to get rid of.

Alternatively, you can also run the following command in the PowerShell prompt that you’ve pulled up to get the process ID number:

Get-Process

For example, “5364” is the process ID number for the DimScreen.exe process which is the process you want to terminate. In order for you to kill this process, you need to type in this command:

kill -id 5364

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Unhandled Exception occurred in Application
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.
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Fix We couldn’t install some updates
If you encounter the “We couldn’t install some updates because the PC was turned off” while trying to run Windows Update on your Windows 10 computer, then read on as this post will give you a couple of suggestions you can use as a reference to fix this error. Make sure to follow the options given below carefully.

Option 1 – Perform basic computer troubleshooting

If you get the “We couldn’t install some updates because the PC was turned off” error on your laptop, then it’s recommended that you connect your laptop to a power source and then try clicking the Update button again. In addition, you also have to make sure that your computer stays awake until the Windows Update process is completed. This will ensure that your computer does not go into an idle state and interfere with the process.

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 and then try to run Windows Update once more.

Option 3 – Try restarting the Windows Update Services

  • Open the Services Manager.
  • From there, make sure that you set the following services and Startup types:
    • Background Intelligent Transfer Service: Manual
    • Cryptographic Service: Automatic
    • Windows Update Service: Manual (Triggered)

Option 4 – 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 5 – Try to install the Windows Updates manually

As mentioned, the error might be because Windows missed installing a particular update which is why you are not able to proceed with the current update. So to resolve the issue, you need to install the update that wasn’t installed by downloading it from the Microsoft Update Catalog website. You also have to make sure that you didn’t turn off the Windows update or have it delayed.

Option 6 – Run Microsoft’s online troubleshooter

Running Microsoft’s online troubleshooter might also help you fix the Windows update error. This online troubleshooter is known to help in fixing Windows Update errors, it scans your computer for issues that might be causing the problem and then fixes them automatically.
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Mastodon test and review

What is Mastodon? Mastodon is an open-source microblogging network very similar to Twitter. You can make 500 characters post messages called toot (tweet), share videos or images, and follow other people. But unlike Twitter, Mastodon is decentralized, meaning the entire Mastodon is not run by a single company pulling all strings.

mastodon

Mastodon can be used directly in your web browser or through a mobile client on a smartphone or tablet. It includes features that seem copied from Twitter-like replies, boosts (retweets), favorites (loves), a timeline view, blocking, and voluntary content warnings that hide sensitive content.

Mastodon also has some great features that Twitter does not have like automated post deletion for the older post of a certain age, requiring approval for follows without restricting your account, and opting out of search engine indexing.

Currently, there are also no ads on Mastodon meaning no ad tracking or ad network surveillance.

How Does Mastodon Work?

Mastodon is a social media network made of nodes called servers or instances each running special software meaning anyone can run their own Mastodon instance (if they have a proper dedicated server). When you have your own instance it can be linked in the federation or remain private, so individuals or companies can have control over individual Mastodon servers.

The software itself is open source based on the social networking protocol ActivityPub which was developed by WWW Consortium.

While using Mastodon, people sign up for accounts with specific instances. Once logged in, you can view a local timeline (of posts from that instance only) or, if the instance is federated with others, see a federated timeline comprised of toots from people in other instances. Mastodon users can send messages to each other using their Mastodon account names that are similar to email addresses in that they feature the server address as well as the user name.

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How to Fix Error Code 0xc004f210 in Windows 10

Error Code 0xc004f210 – What is it?

Error code 0xc004f210 is one of the many activation errors that affect Windows 10 users. Users will be able to identify error code 0xc004f210 because of the following common symptoms which occur:

  • Inability to activate Windows 10 operating system
  • Message box with error code 0xc004f210

Solution

Restoro box imageError Causes

Error code 0xc004f210 usually occurs due to issues related to one’s product key or digital entitlement. Both the product key and digital entitlement are used by Microsoft to enable customers to activate the version of Microsoft that they have legitimate access to. If you enter the wrong product key or if you upgrade to Windows 10 but the current version of Windows to which you are attempting an activation does not match the edition of your digital entitlement, error code 0xc004f210 may occur. To correct this issue, you will need to implement one or more manual repair procedures. This will depend on the problem that caused the error to occur in the first place.

Further Information and Manual Repair

The methods below are simple procedures that Windows users lacking technical knowledge will be able to successfully complete. However, do contact a Windows repair technician if you have difficulty completing the manual repair methods listed below, or if the problem persists after completing these steps.

Method One: Enter Valid Product Key

In order to successfully activate your Windows 10 operating system and resolve error code 0xc004f210, you will need to enter a valid product key. Ensure you enter the 25-character code in the order it is given as making a simple mistake while typing the product key can lead to the reoccurrence of the error code. Follow the instructions below to enter the product key.

  • Step one: Click the Start button then select Settings
  • Step two: Select Update & security then Activation
  • Step three: Click the Change product key
  • Step four: Type in your valid product key with its 25 characters in the correct order

You should be able to successfully activate Windows 10 once you complete the process. However, move to the next manual method suggested below if the problem persists as error code 0xc004f210 could be due to an issue with your digital entitlement.

Method Two: Reinstall Windows 10 Edition that Matches Your Digital Entitlement

Digital entitlement, a new form of activation that doesn’t require the use of a product key, could be the real reason you are experiencing error code 0xc004f210 on your device. To combat any issues related to your digital entitlement, ensure the version of Windows 10 installed on your system matches your digital entitlement. This will require that you reinstall your operating system as well. After reinstalling Windows 10, follow the steps below to complete the process.

  • Step one: Click the Start button then select Settings
  • Step two: After selecting Settings, click Update & Security
  • Step three: Select Windows Update then the Check for updates tab
  • Step four: Activate Windows 10 update

If this method is successful, you will no longer see the error code 0xc004f210 pop up on your screen. However, contact a Windows repair technician to evaluate your system if the issue persists.

Method Three: Use an Automated Tool

This method involves the use of a powerful automated tool. But why is this important you might ask? A third-party tool is often the best solution when all manual repair efforts fail. Automated tools come equipped to tackle the most serious PC problems including error codes which can cause frustration and result in reduces PC performance.

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Fix DRIVER_VERIFIER_DETECTED_VIOLATION
Driver Verifier is a built-in tool in Windows 10 that monitors device drivers on your computer, if it detects issues with drivers, it will attempt to fix the issue. If you are encountering Blue Screen for a Driver and after running Driver Verifier you get another with message DRIVER_VERIFIER_DETECTED_VIOLATION ten follow this article step by step in order to solve it. There is a chance that you will maybe even have to do this in safe mode, if that is your case, login into safe mode and proceed, otherwise proceed normally.
  1. Update Device Drivers

    the most common issue with the blue screen is old Drivers, in most cases, graphical drivers, update all Drivers with the latest versions and see if this will resolve the issue.
  2. Stop or uninstall Virtualization software

    Virtua machine software is a great way to have a safe environment and to experiment while preserving your Windows installation intact, however sometimes due to the nature of these applications they can be a case for blue screen errors. Stop virtualization software to see if it will remove the issue. If that is the case, try another virtualization application
  3. Disable Driver Verifier

    Press ⊞ WINDOWS + X to open the secret menu Click on Command Prompt (admin) Inside command prompt type: verifier and press ENTER Select the Delete existing settings radio button Click Finish Reboot your computer
  4. Reset Driver Verifier

    Press ⊞ WINDOWS + X to open the secret menu Click on Command Prompt (admin) Inside command prompt type: verifier /reset and press ENTER Reboot your computer
  5. Use system restore

    Rollback Windows to the previous state where everything was working fine.
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Delete a Volume or Drive Partition in Windows 10
Operating systems now give users a feature that allows them to create separate partitions out of HDD or SSD-based storage in order to store data in an organized manner. This small yet powerful feature has always been supported by Microsoft. However, there are times when users might fill up on some particular very soon. This may result in the lack of space for that partition which makes the entire process of using PCs slower since there is a large chunk of files that has to be indexed in a smaller partition. If you are one of the users experiencing this dilemma, you need to either delete the other partitions to allocate their storage to the partition that is short on storage or simply recreate the partition so that all the useless data will be deleted and you can start afresh with the overflowing partition. In this post, you will be guided on how you can delete any storage partition from your Windows 10 PC via Disk Management, Command Prompt as well as Windows PowerShell.

Option 1 – Delete storage partition via Disk Management

This is one of the simplest ways you can use to delete a storage partition. Go to the WinX Menu and from there, open Disk Management and then select the Drive you want to get rid of, right-click on it and then select Delete Volume.

Option 2 – Delete storage partition via Command Prompt

  • Tap the Win + X keys or right-click on the Start button and select Command Prompt (Admin) or you could also type in “cmd” in the Cortana search box and right-click on the Command Prompt icon and then select the “Run as Administrator” option from the context menu.
  • Once you have Command Prompt pulled up as admin, type in and enter this command – diskpart
  • After entering this command, the Diskpart Utility will start. Diskpart Utility is a command line-based utility just like Command Prompt but it will get a UAC Prompt after you invoke it so you have to click Yes for the UAC Prompt.
  • After that, type in list volume and tap Enter to see the list of all the partitions created on your PC. This includes both types of partitions that are visible to a normal user in the File Explorer as well as the ones that are created by Windows 10 by default which helps it in storing the boot files and other essential system files.
  • You should see a list of all the partitions made on your computer. Select the partition you want to delete by its Unique Identification number as Volume X where X denotes the Unique Identification Number.
  • Next, type in the select volume number command and hit Enter to select the desired volume.
  • Then delete the volume you’ve selected and type in the delete volume command and hit Enter to delete the volume you just selected and convert it into unallocated space.

Option 3 – Delete storage partition via Windows PowerShell

  • Start by tapping the Win + X keys or simply right click on the Start button and select Windows PowerShell (Admin) or you could also type in “windows powershell” in the Cortana search box and right-click on the Windows PowerShell icon and select the “Run as administrator” option.
  • Once you’ve opened the Windows PowerShell, type in the Get-Volume command and hit Enter to get a list of all the partitions on your PC.
  • Next, select the drive letter you want to delete and then type in the Remove-Partition –DriveLetter command and hit Enter to delete the selected partition. Note that you need to replace the drive letter with the letter of the partition you want to get rid of.
  • After that, it will ask you for confirmation. Just hit the Y key for Yes or hit the A key to say Yes to All. This will delete all the partition you’ve selected and will move them in as unallocated space.
And that’s how you delete a Drive Partition or Volume in Windows 10. Note that you should only follow the last two options given in case the Disk Management is not able to fulfill the user requirements.
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Fix False Notifications in Action Center
There is a central location in Windows 10 that allows users to view all the notifications from its Action Center. Aside from viewing notifications, users can also manage them and take necessary actions in just one single place. Notifications in Windows 10 look similar to a message icon but can be at variance in function. However, recently, a number of users reported that even though they receive notifications about new actions but when opening them, they see nothing. In other words, the notification is false, and to fix this, read on as this post will provide you a couple of workarounds. The Windows 10 Notifications and Action Center notification messages might show a mismatch. For instance, Windows 10 may say that you have some notifications but when you open Action Center, you find it empty and there are actually no notifications there. Take the case of the following screenshot, the Windows 10 Notification says that there are 6 new notifications available for viewing but the Action Center says otherwise. Before you troubleshoot the problem, you might want to run System Restore especially if you’ve made some changes in your computer prior to this issue which might have messed with the Windows 10 Notifications and Action Center. To perform System Restore, refer to these steps:
  • First, press the Win + R keys to open the Run dialog box.
  • After that, type in “sysdm.cpl” in the field and tap Enter.
  • Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
  • After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.
If the problem wasn’t fixed and you’re still getting false notifications, you might want to troubleshoot the problem further using the options given below.

Option 1 – via Windows PowerShell

  • In the Start search, type “PowerShell” in the field and hit Enter to pull up the Windows PowerShell window.
  • Next, copy and paste this command and hit Enter to execute it: Get-AppxPackage | % { Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)AppxManifest.xml” -verbose }
  • After that, reboot your computer and check if the false notifications are now gone.

Option 2 – Try renaming the Usrclass.dat file

DAT errors like the ones that are associated with the Usrclass.dat file, most likely occur during computer startup, program startup, or while you try to use a specific function in your program. Even so, it can easily be fixed. How? Refer to the given steps below.
  • Tap the Win + R keys to open the Run dialog box.
  • Then type %localappdata%MicrosoftWindows and hit Enter to get to the location of the UsrClass.dat file.
  • After that, look for a file named UsrClass.dat and once you’ve found it, right-click on it and select the Rename option.
  • Now rename the file to UsrClass.old.dat and then restart your computer and see if the problem is now fixed or not.
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Windows Clock is missing, invisible or black
Although the Windows Updates do bring in new features and improvements, there are times when they also introduce issues as well. The main cause for these arising bugs is the incompatibility between the old and new software components. One of the issues brought in by such bugs is Clock is missing, invisible or black This problem was experienced by users after they recently installed a feature update. This particular bug can make the Windows clock in the taskbar appear to be black or invisible which makes it hard for users to read the time on their computers. According to experts, this bug has something to do with the Windows Themes and Aero styling. To fix this issue, here are some suggestions that could help but before you get started, you have to restart Explorer first and see if it can help in resolving the problem – if it didn’t, follow the options given below carefully.

Option 1 – Try to disable Custom Theme

It could be that the reason behind the black or invisible Windows Clock can be an old or an incompatible theme. You might have a custom theme in place and it became incompatible after an update. Thus, you can try switching to one of the default themes and then recreate your custom theme afterward. To do so, follow the steps below.
  • Right-click on your desktop and select Personalize.
  • Next, select Themes from the left menu and then select Windows 10 as your theme.
  • After that, you can delete all the other custom themes and create them again from scratch. This should fix the black or invisible Windows 10 Clock.

Option 2 – Try to edit your existing themes

If you don’t want to get rid of your existing themes, there is an alternative solution you can try to fix the missing Windows 10 Clock albeit it’s a bit of a complex one. Follow the given steps below to modify the existing themes and fix the missing or black Windows Clock.
  • First, you need to save your existing theme. Just simply right-click on your desktop and select Personalize and select Themes from the left menu.
  • Next, click on the Save Theme button below your custom theme to save it. You can name the theme anything.
  • After that, you can now modify the saved theme by going to C:/Users/UserName/AppData/Local/MicrosoftWindowsThemes.
  • From there, look for the file with the theme name you just saved, and then right-click on the file and open it with notepad or any other text editing app.
  • Now you have to look for the line that says, “Path=%SystemRoot%resourcesthemesAeroAeroLite.msstyles” and change it to “Path=%SystemRoot%resourcesthemesAeroAero.msstyles” and then save the file and rename it with some other name.
  • Afterward, go back to themes and select the new theme you’ve created. This should resolve the Windows Clock issue as well as other Themes and Taskbar issues.

Option 3 – Try disabling the small icons in Taskbar

This option should help you fix any Windows Clock cases. So if your Windows Clock is nowhere to be found, you can try to disable small taskbar icons on your Windows 10 PC.
  • Go to Settings > Personalization > Taskbar.
  • From there turn off the toggle button for the “Use small taskbar buttons” option. Note that this solution is only a temporary one and it may or may not work in some cases.
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Android security: 9 apps stealing your data!
Due to the latest android malware security analyst, there are alarmingly 5.8 million downloads of applications that will steal your Facebook data, your Facebook login credentials! Russian anti-malware company Dr.Web has found Trojan apps that steal your Facebook login credentials by tricking users into entering their private information in order to eliminate in-app ads. All of the applications have been removed from the play store and cannot be installed anymore but please do check your phone in order to remove them from your phone as well.

List of malware applications:

If by any chance you have any application from this list, consider uninstalling it from your phone for security reasons.
  • PIP Photo
  • Processing Photo
  • Rubbish Cleaner
  • Inwell Fitness
  • Horoscope Daily
  • App Lock Keep
  • Lockit Master
  • Horoscope Pi
  • App Lock Manager
During the investigation, Dr.Web analysts found an additional Trojan app that had previously made its way onto the Google Play Store. Image editing software app EditorPhotoPip had already been removed but could be downloaded through aggregator websites.
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A Quick Guide to Fixing Error 451

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

Restoro box imageError 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.
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