How To Fix Windows Update Error 80070646 or 646

1 answer

Staff May 20, 2015

The Following Steps Fixes the Error 646 During Windows Updates.

1. Using Windows Fixit [The possibility is that the error will be fixed just after running the fixit tool]
Install it here

2. Or fix it Manually.

Open Run Press Windows + R key, type regedit into the search box, and then pressing Enter.‌ Administrator permission is required If you’re prompted type the password or provide then click OK.

In the left pane, Under Computer find Hkey_USERS expand it to the following tree.
HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders
On the right Window [Details pane] find AppData right click and select Modify The value of this key should be‌

If the value is not %USERPROFILE%\AppData\Roaming, right-click AppData, and then click Modify.

fix windows update error 646

In the Value data box, type %USERPROFILE%\AppData\Roaming, and then click OK.


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