Error: Filename, directory name, or volume label format is invalid.
Error: Filename, directory name, or volume label format is invalid.
You might have a virus preventing you from using the Registry Editor, and a suspicious antivirus is blocking it. Verify that the application is indeed regedit.exe from Microsoft. Press Start, enter "regedit" in the search bar, then right-click on the result and choose Properties. Check the Details section to confirm it's labeled as Microsoft-made. Alternatively, right-click regedit and select Run as administrator.
//support.microsoft.com/en-gb/help/2833738/the-filename-directory-name-or-volume-label-syntax-is-incorrect-error