To use the Registry Editor method to prevent the Windows 11 update from being installed on your Windows 10 PC, first, open the Run box by pressing Windows+R keys at the same time.

In the Run box, type regedit and press Enter. This opens the Registry Editor.

You will see a “User Account Control” prompt. Select “Yes” in this prompt to continue. When the Registry Editor opens, from the sidebar to the left, navigate to the following directory:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate

If you don’t see the final “WindowsUpdate” directory, right-click the “Windows” directory and choose New > Key. Then type “WindowsUpdate” and press Enter to create the directory.

On the right pane, double-click the “TargetReleaseVersion” entry to open it. If you don’t see this entry, then in the right pane, right-click anywhere blank and select New > DWORD (32-bit) Value. Then type “TargetReleaseVersion” (without quotes) and press Enter to create the entry.

In the “Edit DWORD (32-bit) Value” box that opens, click the “Value Data” field and enter “1” (without quotes). Then select “OK.”

Once again, on the right pane, double-click the “TargetReleaseVersionInfo” entry. If you don’t see it, then right-click anywhere blank on the right pane and choose New > String Value. Type “TargetReleaseVersionInfo” (without quotes) and press Enter to make the entry.

Here we’re going to enter the release update that we want to remain on. To determine the current version, review the official Microsoft documentation on the latest version of Windows 10.

On the “Edit String” box, click the “Value Data” field and type “21H1” (without quotes), or whatever your preferred release is. Then click “OK.”

Close the Registry Editor and restart your Windows 10 PC. You’re all set. Your Windows 10 PC will block any updates after the update you entered, which includes the Windows 11 update.