This article explains how to delete the UpperFilters and LowerFilters values in the Windows registry. The same steps apply regardless of which version of Windows you are running, including Windows 11, 10, 8, 7, Vista, and XP.
How do I remove the UpperFilters and LowerFilters
Removing the UpperFilters and LowerFilters values from the Windows registry is simple and takes less than 10 minutes:
Run regedit from the Run dialog box (WIN+R) or Command Prompt to open the Registry Editor.
Locate the HKEY_LOCAL_MACHINE hive on the left side of the Registry Editor, and then tap or click the > or + icon next to the folder name to expand it.
