It should work without a problem and I have not even a single little indication that it doesn't
The real question that you should ask yourself is :
Am I willing to pay $35 for something that can also be done manually ?
I sure love these things (sarcastic) :
- Say goodbye to leftover junk. Uninstalling doesn't remove everything.
- Win precious space back. Obsolete files make your PC sluggish.
So you need CleanUp from avast to completely remove avast because uninstall through control panel doesn't remove everything and neither does avastclear.
- Shorten your boot times. Select which programs you want to load on startup.
This can also be done with msconfig or through the registry.