I am using Vista Home. When I click on Accessories, defrag, and anything else, the open with window keeps popping up. Can anyone tell me if system files are missing?
I am having the same problem and cant figure out why it happens
Same question here, does it happen only to system tools or or other programs as well. If it happens to specific file types i.e. .exe or say .txt then there are issues with file associations. There are easy fixes for that, see link below
Does this happen only to system tools (defragmenter, system restore etc.) or other programs as well? When did it start happening? Did you try system restore?