Applications you should remove from Windows

Error Code 17 - What is it?

Code 17 is a typical Spotify error code. Spotify is a music streaming service. Through this software, PC users can browse songs and search by artist, album, and playlist. Simply put, it is an audio player available for BlackBerry, iOS, and Microsoft Windows desktop. You may experience error code 17 if the process fails when downloading Spotify from the internet. The error message is displayed in any one of the following formats:

Error 17: Spotify has encountered a problem and needs to close. We are sorry for the inconvenience. Spotify could not be started (Error code 17)

Some of the symptoms of this error code are program crash, slow Windows performance, and periodic system freeze.

Solution

Error Causes

Error 17 may be triggered by several reasons such as:

• Viral infection
• Incomplete installation of Spotify software
• Corrupt download
• Registry corruption
• Windows Installer service terminated

To use the audio player Spotify successfully on your PC, it is advisable to fix error 17 right away on your system. Delay may cause inconvenience and limit your access to your desired program.

Further Information and Manual Repair

To repair this error code on your PC, you don’t have to hire a professional or be a technical whiz yourself. The good news is that this error is quite easy to fix. You don’t need to be technically sound to resolve it. Here are some proven methods for you to fix error code 17 on your system. So let’s get started:

Method 1 - Make sure that the Windows Installer is running

Sometimes Spotify error 17 may occur if the Windows Installer service is terminated. Therefore before you download, make sure the Windows Installer is running. This is a good way to ensure the error code 17 messages don’t pop up on your PC again. For this here’s what you need to do, first quit all programs. Now go to the start menu and in the search box type RUN, and press enter. In the Open Box, type msiexec /unregister and then press OK to confirm. After that, perform the same steps again, and now in the Open Box type msiexec /regserver and press OK to save. Reboot your PC and try downloading Spotify again. If the program successfully downloads on your system, then this means error 17 is resolved. However, if the error code still persists, then try other methods given below.

Method 2 - Use System Restore to Undo Recent Changes

Another reason for the cause of error 17 is the improper or incomplete installation of Spotify. Improper installations can configure settings and also leave bad entries in the registries. To resolve, use System Restore utility built-in Windows. By using this system tool, you can undo recent changes and resume your computer to its previous condition as it was before the proper installation was attempted. To do this, go to the start menu, then in the search box type System Restore and press enter. Go to System Restore and choose a restore point. Once you’ve selected the point, reboot your PC to activate changes.

Method 3 - Remove Viruses

Viruses can enter and damage your PC if you download software programs from unknown websites. These not only damage your PC but also hinder your ability to install desired programs successfully in this case audio player Spotify. In such an event, simply use an antivirus to remove all viruses infecting your system. After they are removed, make sure you download and install Spotify software from a trusted website.

Method 4 - Repair the Registry

Another cause of error 17 is registry corruption. This occurs due to bad entries, invalid and junk files saved in the registry. To fix the corrupt registry simply download Restoro. This is a user-friendly PC Fixer embedded with a powerful registry cleaner. This software is compatible with all Windows versions. The registry cleaner detects all registry issues, removes all file corrupting the registry, and cleans it immediately in just a few clicks. Click here to download Restoro on your PC and resolve Error 17.

Default Taskbar inside Windows 11 is pretty good if we are talking about its height. Sitting at 48 pixels it is a pretty decent size considering functionality and size ratio but if you want to make it a little larger or smaller know that you can do that as well in order to customize it for your personal needs. Sadly in order to actually change height size, you will have to do it inside the registry editor, but worry not, we are here with you to guide you all the way, one step at a time. Also, note that you can only change Taskbar from normal size of 48px to either small of 32px or large gapping at 72px. Icons will also be scaled proportionally with the taskbar.

Guide

1. Press ⊞ WINDOWS + R to open the run dialog
2. Inside run dialog type in RegEdit and press ENTER
3. In registry editor locate and find HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
4. Right Click on it to select it and create a new DWORD (32-bit) value
5. Name the value TaskbarSi
6. Inside TaskbarSi double click in order to set the value to 0 if you want a small size Taskbar, 1 is if you want to revert back to medium (standard one), or type in 2 if you want a large Taskbar.
7. Save and close the Registry editor
8. Reboot PC

And there you go, you have successfully changed Taskbar size inside Windows 11. If you want to revert back to standard size just repeat steps and place 1 as a value in point 6.

A black screen error inside Windows 11 is a typical screen turning to solid black without any error message. This can be very annoying since it can randomly appear out of nowhere and it will appear while you are using the computer. Worry not, this is not a serious error and we have several solutions for it, so please keep reading and try them as presented in order.

Restart graphic driver

This is the first thing to check if the issue is due to software or driver malfunctioning, there is a shortcut for rebooting graphic driver inside Windows 11. Press WINDOWS + CTRL + SHIFT + B to reboot the graphic driver and see if this fixes the issue. A beep sound should be heard during this process and the screen should turn back to normal.

Check connections

Sometimes the screen can go black due to a faulty connection or cable. If you have it at your hand try a different cable or slightly and gently nudge the existing one to see will screen flicker. If you are on a laptop try gently moving the lid from back to front and pay attention to the screen. If screen flickers or picture returns with this method, cable or connector needs to be replaced.

Clean your computer

The black screen can be because the computer is overheating. If this is the case either fan inside is not working properly or there is a lot of dirt and dust that needs to be removed so airflow can be established again for proper cooling. We have an article on errortools.com on how to properly clean your PC but if you are not technical enough maybe the best solution would be to call someone who is or to take the PC to service for cleaning.

Change The Projection Settings

Press WINDOWS + P to open projection settings, check to see if PC is set to PC screen only. If any other option is selected change it to PC screen only since this can cause random black screen issues.

Uninstall latest updates

If this problem has started to manifest itself during the latest update, go to setting and roll back from the latest update to fix this issue.

Scan system for malware

The black screen can also be caused by various viruses and malware. IF you have anti-virus software, run a full system scan to check it for malware. If you do not have one, download a free one and run a system scan, we recommend Bitdefender.

It has been reported that there are systems out there with Windows 11 operating systems that do not use the whole RAM memory installed in the system. If by any chance you are one of the unfortunate users that has encountered this issue, fear not, we have a solution for you.

Run the Windows Memory Diagnostic tool

1. Press ⊞ WINDOWS + S to open the search menu
2. Type in Windows Memory Diagnostic tool
3. Click on the found app
4. Select Restart now and check for problems
5. Wait for the tool to finish

Memory Diagnostic tool is a built-in tool in Windows, it was designed to automatically find and repair memory issues and should be your first step toward resolving this issue.

Check page file

1. Press ⊞ WINDOWS + S to open the search menu
2. Type in View advanced system settings
3. Click on the search result
4. Click on settings under performance
5. Click on the Advanced tab
6. Click on Change under Virtual memory
7. Uncheck the box for Automatically manage paging file size for all drives
8. Then select the drive and check the No paging file option
9. Click on Set
10. Repeat for all drives on the system
11. Reboot the system for changes to take effect

If after reboot system still does not see and use whole available RAM, repeat this process and turn back ON paging. After you are done move to the next solution.

Modify usable RAM

1. Press ⊞ WINDOWS + S to open the search menu
2. Type in System configuration
3. Click on the search result
4. Go to the Boot tab and click on Advanced options
5. Check the box for Maximum memory
6. Enter the installed RAM on your system in the field box and click on OK
7. Confirm once again on the OK and close the System configuration window
8. Restart the system

If the provided solution has not worked, uncheck the Maximum memory checkbox and save the changes. Move to the next solution.

Change and modify the registry

1. Press ⊞ WINDOWS + R to open the run menu
2. Type in Regedit and press the OK button or hit ENTER
3. Click on YES if prompted by UAC
4. Locate the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory
5. On the right side find and double click on the ClearPageFileAtShutdown DWORD
6. Enter 1 under Value data and click on OK to save the changes
7. Close the registry and reboot the system

Enable memory remapping inside BIOS

In order to do this fix, you will need to enter BIOS on your system. How entering BIOS is different from system to system depending on your manufacturer, especially if it is a laptop this step you will have to do alone. Go to your motherboard manufacturer or laptop manufacturer and see how to enter BIOS.

1. Enter BIOS (80% of the time this can be done by pressing DEL or F12 while the system is turned ON)
2. Locate System Agent Configuration option
3. Select Memory Remap Feature and Enable it

Your BIOS might be different from ours and you might not have the System Agent Configuration option, in this case, go through the setting and try to locate Memory Remap Feature. If this feature is missing as well move to the next step.

Rearrange RAM modules on the motherboard

Sometimes RAM memory cannot be slotted properly or just purely switching them in slots can solve the issue. Take RAM out, clean memory slots, clean motherboard connectors for them, and place them back in a different order. If by any chance none of the methods worked, then the issue might be in the hardware itself, either memory banks themselves, motherboard, power supply, etc. If this is sadly the case, you will have to locate the issue and replace the faulty part. If you are not technical enough for this adventure, the best solution is to take a PC to a computer repair shop.

Error Code 0x80070032 - What is it?

Error Code 0x80070032 is a command that most often relates to codes or commands that have not been entered correctly or do not apply to the given program. It can also appear when mail folders in Windows Mail are not able to sync in the way that they should between the local device and the servers owned by Microsoft.

Common symptoms include:

• Inability to access your emails
• Emails not syncing between devices correctly
• Inability to use certain commands in certain programs

The primary methods used to address Error Code 0x80070032 are fairly basic and easy to complete. Most users should be able to complete these methods on their own and they do not require a lot of time to do. However, if you don’t feel like you have the experience, skills, or knowledge necessary to complete the steps listed below, consider getting in touch with a qualified Windows repair technician to assist you.

Solution

Error Causes

The two main causes for Error Code 0x80070032 are commands entered into programs that cannot be completed or are incompatible with the program at hand and folders in Windows Mail that cannot sync properly.

Further Information and Manual Repair

There are three basic methods that users can try in order to resolve Error Code 0x80070032 on their machine. These are fairly simple and easy to complete. However, if the methods below aren’t successful in resolving the error code or if you do not feel confident in your ability to use them, get in touch with a certified Windows repair professional to assist you.

If you believe that you are seeing the error due to entering a command that didn’t work, use Method One first. If you believe it is due to a mail syncing error, use Methods Two or Three.

Here are the top methods for addressing Error Code 0x80070032:

Method One:  Reinstall the Program in Question

If you believe that you are experiencing Error Code 0x80070032 because of a command that you have entered, the best solution is to reinstall the program in which you were entering the command. You may also want to try updating your program, if able, before reinstalling it. Remember to restart the computer before reattempting to enter in the command that caused the error.

Method Two:  Download and Install Windows System Updates

For many users, Error Code 0x80070032 appears because of a bug in one of the versions of Windows 10. If you believe that this is the case, open up your Windows Updates and check to see if there are any updates that you can install.

For users who are only seeing Error Code 0x80070032 because of the bug mentioned above, Windows released an update that should address the error code on its own. If your computer is fully updated, the error may be resolved on its own. Always remember to restart your computer after installing updates so that the necessary changes can take effect.

Method Three:  Change Your Windows Mail to Local Access

If the above methods did not resolve the problem successfully, you can switch to local access to your Windows Mail, rather than relying on Microsoft access. To do so, complete the following steps:

• Go into your Windows settings and click on the option for “Accounts.”
• Select the account that you wish to access and choose the option to sign in using a local account.
• Enter your password to verify local access.
• Add in your user name, password, and password hint.
• Sign out of the local account to finish.

Once this is done, you can switch back to your Microsoft account, which should reset your syncing ability. Follow these steps to switch back:

• Go back into your settings, selecting “Accounts” and choosing the proper account.
• Change the option to sign in with a Microsoft account.
• Enter your password, then your username and password again.
• Select “Switch” to change back to the Microsoft account.

Method Four: Use An Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

One of the most interesting innovations that were released by Microsoft is the Surface Dial. This only goes to show that Microsoft is very competent not just in hardware but in overall innovation. Although it’s quite a piece of technology and as far as the consensus is concerned, it works pretty well, there are still some issues encountered by users. One of the particular issues experienced by users is that the Surface Dial fails to pair with every Windows 10 PC. At a time of writing, it is still not clear what the cause of the problem really is. However, their possible solutions are provided in this post that might help you resolve the problem. Before you get started troubleshooting the problem, make sure that there are two AAA batteries fitted inside properly.

Option 1 – Check if your PC supports Bluetooth 4.0 LE

In case you don’t know, the Surface Dial only works with the Windows 10 Anniversary Update and later PCs that support Bluetooth 4.0 LE. Thus, you have to check if this is supported or not before you troubleshoot further.

• Tap the Win + R keys on your keyboard to open the Run dialog box.
• Next, type “devmgmt.msc” in the field and hit Enter to open the Device Manager.
• From there, click on Bluetooth and select “Microsoft Bluetooth LE Enumerator” from the drop-down menu. However, if it is not there, then it simply means that your computer does not support this standard which is most likely why you were unable to pair with other Windows 10 PCs. On the other hand, if you were able to see it, then proceed to the next troubleshooting steps below.

Option 2 – Check if Bluetooth is on

The next thing you have to do is to check if Bluetooth is turned on. As you know, the Surface Dial connects to your computer using Bluetooth and so you need to check if it’s really on or not. Aside from that, you also have to verify pairing.

• Tap the Win + I keys to open Windows Settings.
• Next, select Devices from the menu and click on Bluetooth.
• After that, make sure that the toggle switch for Bluetooth is turned on.
• Now all you have to do is to verify pairing by pressing and holding the pairing button located beside the batteries and then wait for a few seconds until the Bluetooth light begins to flash.
• Then go back to the Bluetooth section and click on Bluetooth or other devices.
• From there, click on Add Bluetooth and select Surface Dial.
• Follow the next instructions on the screen and click on Done once everything is completed. That should fix the problem.

Option 3 – Check if Surface Dial is connected to another PC

If you think that connecting a Bluetooth device to two different PCs at the same time is wise, then think again as it does not really bode well for the overall user experience. Thus, you need to disconnect the Surface Dial from the system that you are currently using. On the other hand, if everything fails, then it’s most likely that the Bluetooth adapter is the one at fault. So you may have to get a third-party device that connects to your system via USB and then see if it works or not.

Libcurl.dll - What is it?

Libcurl.dll is a Dynamic Link Library file; a component of Google Earth. Google Earth is a 3D software tool. Libcurl.dll file is visible within a 3D application with the help of which software users can see satellite images, maps, and other geography-related information from their computers. The Libcurl.dll file enables users to map the earth using superimposing images received via satellite imagery and also aerial photography. However, Libcurl.dll error messages may occur while using or installing this program. The libcurl.dll error message is displayed in either of the following formats:

• "Cannot find [PATH]libcurl.dll"
• "The file libcurl.dll is missing."
• "Libcurl.dll Not Found"
• "This application failed to start because libcurl.dll was not found. Re-installing the application may fix this problem."

Solution

Error Causes

Libcurl.dll may occur due to several reasons. These include:

• Bugged program
• Viral infection may add malicious codes to Libcurl.dll file and generate error messages
• Registry issues
• Missing libcurl.dll file
• Hard disk failure
• Misconfigured system files

If you experience difficulty in using Google Earth and come across libcurl.dll error message, it is advisable to resolve the error immediately typically because this error has severe consequences. If not fixed timely, it can lead to the blue screen of death errors, system hang-ups and freezes, sluggish PC performance, PC crashes and browser crashes, slow internet speed, and other system errors.

Further Information and Manual Repair

This error is crucial but the good news is that it is easy to fix. To resolve it, you don’t have to hire a technical expert and pay hundreds of dollars. You can repair the issue with ease by yourself regardless of whether or not you are technically sound. Continue reading to find out the best solutions to fix libcurl.dll error code on your system without any hassle. Here are some of the easiest and the best methods to resolve libcurl.dll error:

1. Check your recycle bin

Since .dll files are shared by multiple programs, there is a possibility that you might have accidentally deleted libcurl.dll file when uninstalling a certain program on your system which was also sharing this file. And because of this, you may experience the missing libcurl.dll error message. To resolve it, all you have to do is to check your recycle bin. If you find the file here, restore it. Once restored, try running the program again! If the error code does not appear, then this means it is resolved. However, if it continues to persist, then try other solutions given below.

2. Scan for Malicious Software on your System

While downloading files and checking unknown emails malicious software like viruses, malware and spyware can also enter your PC. Such software can damage and corrupt dll files. This could be the underlying cause of libcurl.dll error on your PC too. So, to resolve the issue, scan and remove malicious viruses and spyware from your system by using a powerful anti-virus. However, please note, anti-viruses are notorious for slowing PC performance and also sometimes you may also have to stop all other activities on your PC.

3. Clean the Cluttered Disk, Repair dll files and Restore the Registry

Libcurl.dll file error may also occur due to hard disk failure. This triggers registry issues. If you don’t clean the registry every now and then, it overloads the hard disk with files. These include both important and unnecessary files like internet history, temporary files, cookies, junk files, invalid registry entries, and bad keys. These clutter the disk, damaged dll files, and the registry. Therefore first you need to clean the cluttered disk, repair libcurl.dll files and restore the registry. Executing it manually can take a lot of time as you may find it complex if you are not a computer programmer. However, the best, easiest, and quickest way to clean, repair, and restore the registry is to download Restoro

Why Restoro?

Restoro is an innovative, advanced, and multi-functional PC repair tool loaded with powerful and PC performance boosting utilities including an intuitive registry cleaner,  an antivirus, Active X controls, and class module, and a system optimizer. So, whether the libcurl.dll error message is triggered by a viral infection, hard disk failure, or registry issues, this tool takes care of all! The registry cleaning feature scans all registry issues, cleans the hard disk by removing unnecessary and obsolete files, repairs damaged and corrupt dll files, and restores the registry thereby resolving libcurl.dll error in seconds. Simultaneously, the antivirus utility removes viruses and malware if found. And the system optimizer feature ensures optimum PC performance. Restoro is easy to navigate and operate. It is user-friendly, safe, bug-free, and efficient. Furthermore, it is compatible with all Windows versions. Click here to download Restoro and repair your PC and resolve libcurl.dll error today!

DRIVER_IRQL_NOT_LESS_OR_EQUAL will cause your computer to go to the blue screen of death but do not worry there are solutions around this and we are here to instruct you on how to solve this.

1.  Uninstall and install network drivers

   DRIVER_IRQL_NOT_LESS_OR_EQUAL is most commonly tied to bad network drivers, whatever that be a corruption of the driver files or their incompatibility. So first thing is to check if this is the case. Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Device Manager. In the Device Manager expand Network adapters, choose adapter, right-click on it and choose Uninstall. Install latest driver or reboot so Windows will install the driver automatically

2. Update driver

   If you do not want to reinstall the driver or you are unable to for whatever reason updating the driver might do the trick. To update driver: Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Device Manager. In the Device Manager expand Network adapters, choose adapter, right-click on it and choose Update Driver.

3. Fix via Command prompt

   If both of the beforementioned solutions fail, try running the command prompt and fix the issue from there. Press ⊞ WINDOWS + X to open the hidden menu in Windows and click on Command Prompt (administrator) In command prompt type next line and press ENTERDEL /F /S /Q /A “C:\Windows\System32\drivers\mfewfpk.sys Reboot the system

4. Scan your PC for malware

   Sometimes corruption in the system is caused by malware, Scan your system for malware, viruses, etc.

5. Check connections or other hardware issues

   If all methods fail, open your PC case and check to see if connections everywhere are properly connected and tight. Clean your PC and turn it back ON

6. Use system restore

   If anything fails, use Windows system restore and bring back computer into a state where everything was working fine.

If you suddenly encounter a Blue Screen error that points out to either the mfewfpk.sys and epfwwfp.sys files, then this post might help. Both of these files are created by third-party software. The mfewfpk.sys file is created by the McAfee security software while the epfwwfp.sys is created by the ESET Antivirus. These files are residual files and sometimes it blocks upgrading Windows 10. Aside from blocking Windows 10 upgrade/update, these files can also cause a Blue Screen error after an upgrade which leaves your Windows 10 computer useless. When you get a Blue Screen error caused by any of these files, you will see an accompanying error message that states, “DRIVER IRQL NOT LESS OR EQUAL”. To fix this Blue Screen error, you can check out the suggestions laid out below but before you do that, you need to create a System Restore point first as it can help you undo any unwanted changes. In addition, make sure to also boot your computer into Safe Mode with Networking before you troubleshoot.

Option 1 – Try to remove the epfwwfp.sys file

You can try to remove the epfwwfp.sys file using Command Prompt. To do so, refer to the following steps:

• Right-click on the Start button and click on Command Prompt (Admin) from the menu to open Command Prompt with admin privileges.
• Next, type the following command and hit Enter to delete the epfwwfp.sys file:

DEL /F /S /Q /A “%systemroot%System32driversepfwwfp.sys”

• After the scan is completed, restart your computer and see if it fixed the Blue Screen error.

Note: You can also use the ESET AV Remover tool to uninstall Eset security software to remove the epfwwfp.sys file.

Option 2 – Try to remove the mfewfpk.sys file

The same with the first option, you can remove the mfewfpk.sys file using CMD.

• First, right-click on the Start button and click on Command Prompt (Admin) from the menu to open Command Prompt with admin privileges.
• After, type the following command and hit Enter to delete the epfwwfp.sys file:

DEL /F /S /Q /A “%systemroot%System32driversmfewfpk.sys”

• Once the scan is completed, restart your computer and see if it fixed the Stop error.

Note: You also have the option to remove the mfewfpk.sys file using McAfee Product Removal tool to uninstall the McAfee security software. All you have to do is download the McAfee Product Removal tool and run it and then follow the onscreen instructions to install it. Once it is installed, click on Next. After you select the radio button to agree to the terms of use, click on Next once again. Finally, restart your computer and check if it is able to resolve the problem or not.

Option 3 – Run the Blue Screen Troubleshooter

Troubleshooting Blue Screen of Death errors wouldn’t be complete without the Blue Screen troubleshooter. As you know, it is a built-in tool in Windows 10 that helps users in fixing BSOD errors. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 4 – Try running the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the Blue Screen error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Error Code 0xC004C020 (Code 0xC004C020) – What is it?

Error code 0xC004C020 (Code 0xC004C020) is an error that occurs when you attempt to activate a copy of Windows 7 with a key, but the key has already been activated multiple times. When receiving this error code, it means that you are trying to exceed the number of times that the Windows 7 key is allowed to be activated. Common symptoms include:

• Attempting to install Windows 7 with a key and a dialog box with the code 0xC004C020 is displayed.
• The computer is unable to install Windows 7 with the key.
• Certain features will refrain from working until the correct key has been entered.

Solution

Error Causes

Error Code 0xC004C020 occurs when you are not able to install Windows 7 using a previously purchased key code that has been installed numerous times previously on the same computer.

• You are not able to use your previously used key to install Windows 7.
• You have used the Windows 7 key the maximum number of times allowed.

Error code 0xC004C020 simply means that the Windows 7 code that you are trying to use to install Windows 7 has already been used the maximum number of times allowed, even when installing it on the same computer that it was previously used on. This would indicate that the key is what is known as a volume key- meaning that there is a cap on the number of uses.

Further Information and Manual Repair

Many people encounter this problem when they are doing software development or testing and need to reinstall Windows 7. Some people might also encounter this error code when installing Windows 7 with a key that was used too many times previously. It should be noted that there are several ways to fix this problem, but if nothing is working, you should contact a computer repair technician.

Method One

Activate by phone- the long method.

1. Click the start button, right-click Computer, click Properties, and then click Activate Windows.  This will open Windows Activation.
2. Click on “Show me other ways to activate”.
3. Find and enter the Windows 7 key, then click Next.
4. Click on “Use the automated phone system”. If you are prompted for an administrator password or a confirmation, confirm or type the password now.
5. Select the location nearest to you and then click the Next button.
6. There will be a list of available phone numbers, choose one and call it. There will be an automated system that will guide the activation process.
7. Enter the installation ID when prompted, it will be listed on your computer screen.
8. The phone system will give you a confirmation ID, write this down.
9. Type this confirmation ID into the space that is provided by step 3. This will be in the activation dialogue. Then, click NEXT and follow the instruction.
10. If this is not successful, stay on the line and be transferred to a customer service representative that will assist you.

Method Two

Activate by phone- this is a much simpler method.

1. Click on Start, type: slui.exe 4 into the Search box
2. Press Enter on the keyboard.
3. Pick your country.
4. Choose the Phone Activation option; stay on hold to speak with a customer service representative.

Method Three

Error code 0xC004C020 occurs if you have used your Windows 7 activation key on multiple computers, or multiple times on the same computer. You are not allowed to exceed the uses of the key—you should consider purchasing a new key if this is the case. A Windows 7 key is available for purchase online through the Microsoft website, in the shop section. The new product key must then be activated within 30 days, or it becomes no longer valid. It can be activated online or through the telephone. If it is not activated on time, features will stop working until the new key has been activated. This should be the last resort method, as you should not have to purchase a new Windows 7 key code if it is not necessary. If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.