Fix mfewfpk.sys, Epfwwfp.sys Errors in Windows

Error Code 0xc004f050 – What is it?

Error code 0xc004f050 refers to a problem with activating the Windows key. The problem appears when you try to activate a copy of Windows by using Windows Activation wizard. This happens when the system becomes unstable and critical system files start missing. Though Windows 10 is a free upgrade for Windows 7/Windows 8/Windows 8.1 users, the activation error is still an issue. If you already had Windows 7/Windows 8/Windows 8.1 activated and did an upgrade successfully, then there should be no problem. This Problem Occurs only when you do a clean install.

Symptoms

When you try to activate a copy of Windows Vista or Windows 7 by using the Windows Activation wizard, you receive an error similar to the one below:

An error has occurred Code: 0xC004F050 Description: The Software Licensing Service reported that the product key is invalid

Solution

Error Causes

• This causes due to an invalid product key.
• This problem may occur if the license validity interval has expired, or if the license is not signed correctly.
• Error Code 0xc004f050 occurs when the system becomes unstable and critical system files start missing.
• Improper way of installing, deletion of some very important system files, misconfigured system files, etc. may also cause this error.
• When you do a clean install, it wipes everything from the Primary Drive and after the install, windows can't find the Hardware ID which is used to verify your license.
• For Windows 7, Windows Server 2008, and Windows Vista-based computers, this error may occur if you have entered the key for a beta version of the operating system while using the released version of the operating system.

Further Information and Manual Repair

This error is not something that can be fixed in seconds but will require some time and technical knowledge.

Method 1:

Re-insert the product key by using the Change Product Key tool:

1. Click Start, click Computer, and then click System properties on the toolbar.
2. In the Windows activation section, click Change product key.
3. If you are prompted for an administrator password, type the password or click Continue.
4. In the Product key box, type the product key, and then click Next.
5. Follow the steps in the Windows Activation Wizard to complete the activation process.

Method 2:

Activate Windows by using the automated telephone system:

1. Click Start, and then click Computer.
2. Click System properties on the toolbar, and then click Click here to activate Windows now in the Windows activation
3. If you are prompted for an administrative password, type it and click Continue.
4. Click Show me other ways to Activate.
5. Click Use the automated phone system and follow the instructions.

Method 3:

1. Clean install Windows 7/Windows 8/Windows 8.1 using the installation disk and activate your copy.
2. Now, download all the updates to see the Windows 10 Upgrade notification or download Windows Media Creation Tool and use the option Upgrade this PC to get Windows 10 right away.
3. Once the upgrade is done, check the Activation Status. It will be fully activated as it should be. The Error code 0xc004f050 should not appear anymore.

If you want to get rid of the old Windows installation folder, then use the Windows Media Creation Tool to create a Flash Drive. Clean Install Windows 10. Now, every time when it asks for a product key, skip it. After installation is complete, Windows will automatically identify and activate your Copy. NOTE: Clean Install will make Sure you cannot roll back to your previous Windows 7 or Windows 8. So do it only if you are confident of using Windows 10 from here on. To verify the Windows activation status, follow these steps:

• Click the Start button, and then click Computer.
• Click System properties on the toolbar, and then view the activation status in the Windows activation section.

Windows comes with a built-in backup solution. However, if it failed because of an internal error, you will encounter an error message saying, “The backup application could not start due to an internal error, Server execution failed (0x80080005)”. When you get this kind of error, it means that it did not start and the process failed with a Server execution error. If you got this kind of error worries not for this post will guide you in fixing the problem in your Windows 10 computer. The Windows Backup service is an excellent feature in Windows that only works on the NTFS file system and if you want to use this make sure that you have formatted your files system to NTFS. It is performed by the Volume Shadow Copy, all you have to do is right-click on any folder and if you see the “Previous versions” option, this means that a backup process runs from time to time and can bring back old files when needed. To resolve the “The backup application could not start due to an internal error”, here are two suggestions you can check out.

Option 1 – Check if the Volume Shadow Copy service is running and restart it

The first thing you need to do is check if the Volume Shadow Copy service. To do that, refer to the following steps:

• Click on Start and type “cmd” and right-click on Command Prompt from the search results.
• Then select the “Run as administrator” option to open Command Prompt with admin privileges.
• After that, type “net stop sdrsvc” and hit Enter to execute the command in stopping the Volume Shadow Copy service.
• Next, type the “net start sdrsvc” command and hit Enter to start the service again.

Note: You can also restart the service using the Windows Services Manager.

• In the Cortana search box, type “services” and click on the Services icon to open the Services Manager. Alternatively, you can also tap the Win + R keys to launch the Run prompt and then type “services.msc” in the field and hit Enter to open the Services Manager.
• From there, look for the Volume Shadow Service (sdrsv) from the list of services. Its Startup type should be set to Manual by default.
• Restart the service and if you don’t encounter any error while you turn it on, re-run the backup service and see if the backup process runs successfully.

Option 2 – Try to run the Volume Shadow Copy Service in a Clean Boot State

If the first option didn’t work and the service still keeps on failing even though the service is running, you can try putting your computer in a Clean Boot State and then try to run Windows Backup again.

• 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.)
• Now try to run the Volume Shadow Copy service again and see if the process goes smoothly.

Note: You might also want to delete all the files in the backup solution if you want to start fresh with the backup solution. Just go to C:/System/Volume/Information/Windows Backup and take ownership of the folder. After that, make sure to stop the Volume Shadow Copy service and then delete all the files inside it.

Toolbar.Dll is one of the most destructive software you will encounter on your Personal Computer. For every report out there you read about threats to your Windows PC, a significant number speak about Toolbar.Dll. Technically, this is non-essential to the functioning of your computer yet poses great dangers to your computer's security. It can cause massive destruction if not properly resolved.

Solution

Error Causes

As suggested below, the sources of Toolbar.Dll are many and broad: a) Misconfigured System: Nothing causes this malfunction on your own Computer a lot more than having a misconfigured system. You ought to anticipate this malfunction and repair the situation before it gets worse. Especially if you have Toolbar.Dll files on your computer. More often than not the situation can only get worse. b) Broken Windows OS File: the 2nd trigger of Toolbar.Dll, and that is linked to the primary aforementioned one, is a broken Windows OS file. Fix it as soon as you realize its existence. c) Installation Issues: If you poorly install Windows on your PC, you generate a loophole by which Toolbar.Dll malfunction might appear. You essentially provide a massive possibility to the Toolbar.dll error to affect your Computer, if you neglect to finish an install or uninstall procedure. d) Removing Programs and Hardware Incorrectly: When you decide to remove programs and hardware, you need to exercise caution. Should you be rash with this specific procedure, you raise the odds of striking the Toolbar.Dll malfunction on your Personal Computer. e) Incorrect Shut-Down: unless you want to strike this malfunction, ensure that you shut down your Computer procedurally. Regardless of what hurry you might be in, always power down your computer correctly.

Further Information and Manual Repair

In the event you strike the Toolbar.Dll malfunction on your Personal Computer, you shouldn't get frightened. But, prior to starting considering of ways that to fix this malfunction, you should look for the signs, to be able to recognize it. The malfunction exists in your Computer in circumstances where software programs can't load properly. The situation might be repaired in numerous methods, as revealed below:

• Switch on your computer, and log in as the superuser/admin. Next, select All Programs, subsequently go to Accessories. Under Accessories, choose System Tools. Click on System Restore from the menu.
• A fresh window will appear. In the new window, find the choice designated "Restore My Pc To An Earlier Time", before you click next.
• Search for the newest System Restore update from "On This List, Click a Restore Point" before you click Next once more.
• Pick Next when a verification window appears on the screen. After the complete procedure is done, reboot the pc and the Toolbar.Dll malfunction will soon be no further.

Each of the measures suggested previously, are for advanced pc users. You must obtain the very best software on the web to eliminate this malfunction, in case you are a non-techie. Alternately, contact a tech to help fixing the problem.

What Is 0xc000001d Error?

The 0xc000001d error is a common yet critical error that can occur when Windows is damaged or fails to work as a result of either missing system files or corrupt system components. This error can be extremely dangerous to Windows as it can inflict major damage to data and component files.

Error Causes

A 0xc000001d error code can occur because of a number of reasons, of which corrupt registry files are the most common, and about 94% of the time, this results in the error. However, virus infection or an adware or spyware invasion can also result in this error. Outdated drivers and missing DLL files can also be critical and will lead to this error causing major damage to computer files. Contrary to popular belief, incomplete installation and unfinished uninstalls can also because of this error. Other causes include improper shutting down of computers and improper hardware or software deletion.

Solution

Further Information and Manual Repair

Because of this 0xc000001d error code, Windows can fail in starting some processes and the system’s performance can significantly slow down. In some cases, Windows has problems starting up and the system can freeze. Lastly, this error code can even result in the Blue screen of death error message, just like other critical Windows errors. If any of the above problems and symptoms occur in your PC, then you should immediately seek to resolve this problem. In order to resolve this 0xc000001d error code or repair the corrupted and damaged Windows files, you will need a 0xc000001d repair tool. There is more than one method of treating this kind of error code, and here is how you can manually do it:

• Start the computer and log in as administrator
• Go to the start button and select All Programs. Go to Accessories, System Tools, and then System Restore
• Click on System Restore and in a new window, select the ‘Restore my computer to an earlier time’ option and click Next
• On the new confirmation window that appears, click Next
• Restart your computer after the restoration has been completed

Another way to manually repair this 0xc000001d error code is to:

• Manually edit the Windows registry
• Update all the drivers for the device

If you are running a System File Checker scan but got an error message instead that says, “There is a system repair pending which requires reboot to complete, Restart Windows and run SFC again”, worry not for this post will walk you through how you can fix the problem. This kind of error can be addressed and fixed with several potential fixes which will be provided in this post. You can try to restart your computer and run a System File Checker scan again or delete the pending .xml file or use the “revertpendingactions” parameter for the DISM tool. For more information, refer to each one of the options given below.

Option 1 – Try restarting your computer and run the SFC again

The first thing you can do to fix the problem is to restart your computer and let the pending process be completed. After your computer restarted, try to run System File Checker again and see if the error is now fixed or not. If not, refer to the other options below.

Option 2 – Try deleting the pending .xml file

The next thing you can do to fix the problem is to delete the pending .xml file. How? All you have to do is navigate to this location at CWindowsWinSxS and from there, look for a pending .xml file and rename it or delete it. This will get rid of any pending tasks and will build a fresh new check.

Option 3 – Try to use the “revertpendingactions” parameter for the DISM tool

If the two options given above didn’t work, you can try using the revertpendingactions parameter for the DISM tool. If you’re not able to boot into Windows, then run Command Prompt from the Recovery Console and execute the given command below.

dism.exe /image:C: /cleanup-image /revertpendingactions

After you execute the command, restart your computer and try to run System File Checker again and see if it has fixed the problem or not.

If you’ve tried resetting your Windows 10 computer using the Reset This PC option in order to restore your computer’s factory settings and the process suddenly fails for some reason and you got an error message instead stating, “There was a problem resetting your PC, No changes were made on your Windows 10 computer”, then this post might help you resolve the problem. Carefully follow each one of the options given below to resolve the “There was a problem resetting your PC error on Windows 10.

Option 1 – Try renaming the System and Software hive

• If you’re still able to boot to the desktop of your Windows 10 PC, open an elevated Command Prompt from the WinX menu.
• Now use the CD command and change the directory to Windows\System32\config folder. Simply type in the following command and hit Enter:

cd %windir%system32config

• After that, you have to rename the System and Software registry hives to “System.001” and “Software.001”, respectively. To do that, just type each one of the following commands and hit Enter after you type each of them.
  • ren system system.001
  • ren software software.001

On the other hand, if your Windows 10 PC isn’t able to boot to the desktop, you can just access Command Prompt from the Advanced Startup options or you can also boot into Sage Mode and open Command Prompt from there and then run the given commands above. Note: If you only want to use the Refresh your PC option, you must only rename System hive and not Software hive. On the other hand, if the Software hive is really corrupted, you might not be able to use the Refresh your PC option in such a case. Thus, you really need to rename the Software hive as well. Once you’ve renamed the Software hive, you won’t be able to use the Refresh your PC option but only the Reset your PC option.

• Type “exit” to close the Command Prompt and then restart your PC and try resetting your PC again.

Option 2 – Try to disable and re-enable the Windows Recovery Environment

If the first option didn’t help, you can try disabling the Windows Recovery Environment and then enable it back again. To configure a Windows Recovery Environment or Windows RE boot image and recovery options, you have to use the REAgentC.exe tool.

• Tap the Win + S key and type “REAgentC.exe” to open the REAgentC.exe tool.
• After that, type the following command and hit Enter to disable the Windows RE:

reagentc /disable

• After disabling the Windows RE, you need to enable it back by typing the following command:

reagentc /enable

Option 3 – Try to boot the USB recovery drive

If the two previous options failed, you need to try another workaround which is to boot to the USB recovery drive > Troubleshoot > Recover from a drive. From there, follow the on-screen instructions and you should be good to go.

ActiveX Controls are plugins you may constantly come across when working with Internet Explorer. An illustration of these kinds of control is the MICROSOFT IE Flash Player. They frequently result into significant problems for the Computer, yet they're vital for IE to operate correctly. You shouldn't ever overlook that after you install Active Controls in your Personal Computer, you effectively provide them with access to other areas of your PC. The ActiveX Controls not only tracks your search routines, but in addition puts malicious software, which might possibly be hazardous to your Computer.

Solution

Error Causes

ActiveX Controls make your Internet Explorer work as required and are usually great and beneficial to your own Computer. Yet, they can function as a source of problems because of the following factors.

• You should stop installing  ActiveX Controls from Un Trustworthy Resources

In the event they are installed by you from un trustworthy resources new threats are likely introduced by ActiveX Controls to your PC. One of the more regular types of ActiveX Controls worth necessary for installation is Flash Player. Yet, never be in a hurry to install these Controls from resources that you don't trust.

• Limit The Number of ActiveX Controls You Install on your PC

Prevent installing java/oracle ActiveX controls, because of its weak security measures which could make your Personal Computer and any additional information there in, open to attacks. Limit to the variety of ActiveX Controls that you install on your PC as these could increase the vulnerability canvas on your computer.

Further Information and Manual Repair

You can manually fix any malfunction that springs up from ActiveX Controls. Yet, more than mending the harm, produce the setting that ensures you never have troubles from them to start with. Just how do you do that?

a) Stop installing or downloading ActiveX Controls from Un Trustworthy Sources

This has been mentioned above, but it's worth repeating because it's the most common reason behind ActiveX Controls malfunctions. You might anticipate that for this kind of obvious reason for ActiveX Controls malfunctions, PC consumers would be extra cautious, however that is never true.

b) Limit ActiveX Controls Softwares

You can restrict ActiveX controls from running automatically on your PC. To limit them, head to Tools in Internet Explorer, and choose Internet Options. Proceed to the Security tab, and select Customs level Browse completely down before you get to the area designated "ActiveX". Subsequently, mark "Prompt" under every choice that you encounter. But don't mark the choice indicated "Run ActiveX Controls and Plug-Ins", together with, "Script ActiveX Controls Marked Safe for Scripting". By performing the measures emphasized above, you happen to be in substance stating that, you will not permit any installation of ActiveX Controls, without express authorization by you. In this manner, you have better control over different forms of ActiveX Controls you permit to be installed, therefore reducing potential threats to your PC.

Runtime Error 5 - What Is It?

Runtime Error 5 is one of those errors that Windows users encounter at least once in their life. Generally, when Runtime Error 5 occurs, the message that appears says ‘Invalid Procedure Call or Argument’. Runtime Error 5 occurs because the Quality Analyst function that resides within the Operating System behaves in an abnormal manner and the user receives a warning.

Solution

Error Causes

As explained above, Runtime Error 5 is caused because of the unexplained behavior of the Quality Analyst function. The problem occurs when the function is lost and is not mapped to any drive. As a result, Windows is unable to find and load it and displays the error message. Runtime Error 5 is also caused by other reasons listed below as follows.

• When files of programs like Visual Basic use bad entries in the registry.
• When a user attempts to load Internet Explorer and a global cash of browser occurs, this also causes Runtime Error 5.

Since these types of errors can easily be fixed, it is strongly advised that a user takes the necessary actions to keep them from occurring in the future.

Further Information and Manual Repair

Some instructions for users to fix Runtime Error 5 as soon as it appears are listed below as follows.

1. Users are recommended to restart their computers. However, prior to doing so, it is advised that any programs that are opened are closed and work is saved to prevent data loss. Once the computer restarts, users should load the program that triggered Runtime Error 5 once again to determine whether or not the error recurs.
2. If the problem persists, the best approach is to uninstall the program causing the error. This can be accomplished by going to the ‘Control Panel’ and selecting the ‘Add/Remove programs’ option if one is using Windows XP or Windows 95. However, if a user is running Windows 7, the same task can be accomplished in the ‘Program and Features’ option. If there’s an option that allows you to clear personal settings and preferences, the box should be checked.
3. Now reinstall the program using the latest version of the installer to stop encountering this error. Use any patch for the program if available. Run installer while following the instructions on the screen. Check the default settings as well.  It is suggested to instantly install any patches if available.
4. Another piece of advice is to simultaneously press ‘Ctrl, Shift, and Esc’. Windows task manager will appear. Go to the “processes” tab and select a process that doesn’t look familiar to you. Note the filename and click on the ‘End Process’ button. Load the program again and find out if the error occurs. Once the program causing the error is identified, the user can perform the steps listed above to resolve the problem.

What Is STOP 0x00000014 Error?

0x00000014 error is actually an error that is always displayed on a STOP message.

It is also known as Blue Screen of Death, abbreviated as BSOD. When this error occurs, the message that is displayed to the user either says ‘STOP: 0x00000014’ or states ‘CREATE_DELETE_LOCK_NOT_LOCKED’. It is crucial to fix this error to ensure your program is functioning appropriately. If this error message is not rectified, you might be opened to other error messages, such as error code 0x000000d1. 

Solution

Error Causes

As far as the causes of STOP 0x00000014 error are concerned, this error usually occurs when a device driver or hardware problem occurs. This error may also occur if users attempt to run some specific application or update or modify an existing application. When a 0x00000014 error occurs, the operating system restarts to disable the PC from performing any further.

Without taking into consideration the causes of its occurrence, it is crucial to make sure that the 0x00000014 error is fixed as soon as possible to eliminate any undesired inconvenience in the future.

Further Information and Manual Repair

A lot of times when an operating system tries to recover from the STOP 0x00000014 error, the user is prompted that Windows has recovered from an unexpected shutdown.

However, if Windows fails to recover on its own, manual repair has to be performed.

While there are several ways this error can be fixed, some of the most effective and efficient ways of troubleshooting the 0x00000014 error are listed below as follows.

• Restart your computer. Often simply restarting the computer can help eliminate the problem.
• If restarting the system doesn’t help, find if you have recently modified or altered any hardware or driver. It is possible that the 0x00000014 error has been caused by the recent modification. Undo the changes and find out if the error occurs again. If it doesn’t, it is highly likely the issue has been resolved.

However, if the error persists, some solutions that may work are outlined below.

• Start your system using the Last Known Good Configuration. This will undo any changes in the driver and recent registry.
• Another solution is to manually perform System Restore. This will also return the system back to its former state.
• Another idea that my work is to use roll back the device driver. When the driver will return to its previous version, the problem will easily be resolved.

To keep the 0x00000014 error from occurring in the future, it is advised to unplug any newly installed hardware or reinstall any deleted software.

If you're not tech-savvy and wish to get this error code rectified in a jiffy, download a powerful automated tool and perform a computer scan.

Having a PC is a great thing, more often we are enjoying it than we have issues, but as time passes it seems that our computer is slowing more and more as new applications and games are coming which demand more powerful computers. Before you decide to throw away your computer and buy a new one because you feel it is a bit slow, read through this guide where we will guide you to common tips & trick to make your PC run faster:

1. Keep your PC clean and tidy

   Slowdowns and many other issues, even hardware failures can come from dirty PC. Make sure your PC is clean and tidy for maximum performance.

2. Optimize airflow through PC casing

   Airflow is very important so your GPU and CPU and overall all hardware components can be kept in optimal working temperatures. If any device inside the casing is working in abnormal temperatures you will experience slowdowns and freezing on daily basis. Make sure that all fans are working and that your temperatures are in the optimal range to prevent overheating and make sure to have maximum performance.

3. Check PC for malware

   Viruses, worms, and overall all malware can drastically reduce system performance. Make sure that your protection software is up to date with the latest definitions and that you have the latest Windows updates installed.

4. Create a Hi-Performance power plan

   Windows power plans can be a very useful feature, especially if you are working on laptop but in order to boost performance and drain maximum, you will need to switch to a hi-performance power plan.

5. Free space on the system drive

   Having little to no space on your Windows system drive can lead to extreme slowdowns, make sure that your hard drive is not on red when viewed from File explorer or you will experience even 50% poorer performance.

6. Choose startup applications

   If you have many applications starting up with your Windows and many of them running in the background you will experience performance issues. Each application that runs in the background is taking RAM and CPU time for themselves which could be free and used for the program that you need.

7. Do not open too many tabs in Browser

   Having too many tabs in Browser while working on a computer can also cause slowdowns, each tab is taking RAM for itself and even can cause Browser poor performance if a tab is LIVE and refreshing with new content all the time.

8. Remove browser extensions

   Speaking of browser, having too many installed extensions which are active as soon as the browser is up and running can also lead to poor performances. Remove all which you really do not need and your computer will gain in speed.

9. Make hardware upgrade

   Sometimes your system is just a little outdated, upgrading more RAM or switching to a new SSD with the greater speed can cause a world of difference in PC performance. Check to see how RAM is standard and upgrade accordingly, you can also upgrade the CPU and other bottlenecks in your system this way instead of completely buying a new PC.

10. Format and reinstall system

    Drives, application traces, registry entries, etc. are piling up in your system over time, and if enough time is given it will clog your computer. From time to time it is a good idea to backup files and do a completely clean full format of HD and install a new and fresh copy of Windows with new and clean copies of applications and drivers.

That's it, 10 tips on how to make your Windows and PC perform better and speed it up. I hope that you found the read informative and helpful and I hope that I will see you soon.