Windows 7: How do you delete /OpenWithProgids

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.wma

Delete the User Choice key.

Progids should read like this:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.WMA\OpenWithProgids]
"WMP11.AssocFile.WMA"=hex(0):

You might find it easier to delete the whole .wma key (that is the thing that looks like a folder named .wma on the left in your screenie )

Then merge this Attachment 147004

As suggested check to that the Program File is deleted.

In msconfig>Startup tab uncheck everything besides AV and gadgets/stickies. Then in msconfig>Services, hide all MS services and see what is still running. Startup Programs - Change - Windows 7 Forums

Set a Restore Point, do a search in regedit for irfanview and progids then delete each key containing it. You can do this search with regedit, or RegSearch suggested by SIW2 which is better.

The reason CCleaner keeps finding the key is because it is and empty key from a deleted program, but it is repopulating itself so it needs to be tracked down and deleted.

Progids should read like this:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.WMA\OpenWithProgids]
"WMP11.AssocFile.WMA"=hex(0):

You might find it easier to delete the whole .wma key (that is the thing that looks like a folder named .wma on the left in your screenie )

Then merge this Attachment 147004

Delete the keys with that name in it, which will take any sub-sets.

Set a Restore Point.

Uncheck everything in msconfig>Services except Norton which I would immediately replace with MSE or Avast, but you already know that.

The Services which turn themselves back on and are not In Startup list need to have their Preferences changed to stop running without your permission, set to Manual in Services.msc, or uninstall them. Secunia PSI is a problem program I'd uninstall.