Windows 7 Error "Explorer. exe No such interface supported"

I got this error after I did a mass update of my windows, reaching from a clean installation to SP1. I messed around a lot on the internet but could not find a good solution, most of the final suggestions were "Back up your data and reinstall". But as I didn't wanted to do that (just thinking about all the softwear I have to reinstall gave me a headache ) I keept going until I found exactly what I needed.

The process of fixing this is really easy if you know what you are doing, but I wasn't, so I will have to give credits to Jae Hyuk Lee on his post.

I will rewrite the solution here to keep it for posterity and make it easy to search.

1. open comand prompt as admin
2. run regsvr32 c:\windows\system32\actxprxy.dll
3. restart if needed

Class not registered Windows 7 error

Some time ago I had a lot of problems with my Windows 7 that I could not find a solution to. Some of them were:

- opening a folder from uTorrent ('Class not registered')
- opening Network and Shering (dosen't open)
- opening System window (same)
- opening most of my Control Panel windows

I found a lot of solution that didn't work for me, but the only that did was on google chrome's bug tracker in this post, response #9.

The solution just repairs all the dll's on c: drive, if you have Windows installed on a difrent partition just change C: to whatever letter is your windows partition.

I recommend reading the post before running the command just know the risks and what to expect.

FOR /R C:\ %G IN (*.dll) DO "%systemroot%\system32\regsvr32.exe" /s "%G"