Defender can't remove WhenU, MS Antispyware could!

[Guest]

I used to have MS Antispyware and everytime I installed BearShare, it would
remove the WhenU spyware. I upgraded (?) to Defender, and it keeps telling me
everyday that it's there, and when I try to remove it, it fails, and gives
the error: "Windows Defender encountered an error: 0x80501001. One or more
actions could not be completed successfully." Why could one product do it and
not the newer one?

 

[Bill Sanderson MVP]

The object that's detected is part of an archive file. Windows Defender,
presently, won't just delete an archive file because one file in it is
bad--you could lose, for example, a zip backup of a machine.

So--in a sense, this is an improvement over Microsoft Antispyware.
Practically speaking, it is a problem, however, and I don't think we are
seeing the final behavior.