How to stop Windows 10 update? Getting error: 0x80240020

Original title: Opting out of windows 10

How do I get rid of the  0x80240020: "Windows failed to install the following update" error. I do not want to upgrade to Windows 10 and have hidden KB3035583  that installs the Get Windows 10 app, as per instructions to opt out. This error still pops up every day. FYI, I rolled Win. 10 back to 8.1 on another computer and it corrupted several files in the registry. The reason I opted out is Windows 10 is not as vision impaired friendly as 8.1.   



Thanks for posting your query to Microsoft forum. I will certainly help you with this.

This notification is for free upgrade to Windows 10. However if you want to stop this notification, you can follow the methods below and check.

Method 1: Uninstall the Windows Update as follow:

Remove the Windows update KB3035583

If the issue persists, follow method 2.

Method 2: Rename the GWXUXWorker.exe

Terminate the GWX.exe process using Task Manager. Moreover rename the GWXUXWorker.exe and GWX.exe to .old as suffix from directory location:-

Windows\System32\GWX, if getting any issues while renaming then give the system permission's to respective files and then try to rename it again. OR you can delete the entire directory folder.

If the issue persists, follow method 3.

Method 3:  Registry key to stop the notification :-

  1. Press Windows key + R on your keyboard to open the run dialog box.
  2. In the Open field, type regedit.
  3. Click OK.
  4. Click Yes on the User Account Control (if prompted).
  5. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Gwx
  6. Right click.
  7. Click Modify.
  8. In the Value data: field, dword:00000001.
  9. Click OK.
  10. Exit Registry Editor.

Important this method contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 

How to back up and restore the registry in Windows

Hope this information is helpful. If the issue still persists, please post back for further assistance, we'll be glad to assist you.


Thanks & Regards,

Isha Soni

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Question Info

Last updated May 29, 2018 Views 571 Applies to: