ITunes Store Crashes Windows 8.1 | QTMovieWin.dll fix did NOT work

Question

I am running iTunes 11.1.3 on Windows 8.1 64 bit. iTunes and the iTunes Store worked prior to my upgrade to from Windows 8 to 8.1. Every time I attempt to access the iTunes Store or anything associated with it, iTunes crashes. I have tried the QTMovieWin.dll fix by thurdy, which failed to work. I have also attempted booting iTunes into safe mode, loading iTunes under another user in Windows, and have checked for third-party plug-ins. None of this has worked. Does anyone have a solution? Thanks.

Answer 1

Let's try a standalone Apple Application Support install. It still might not install, but fingers crossed any error messages will give us a better idea of the underlying cause of the issue.
Download and save a copy of the iTunesSetup.exe (or iTunes64setup.exe) installer file to your hard drive:
http://www.apple.com/itunes/download/
Download and install the free trial version of WinRAR:
http://www.rarlab.com/
Right-click the iTunesSetup.exe (or iTunes64Setup.exe), and select "Extract to iTunesSetup" (or "Extract to iTunes64Setup"). WinRAR will expand the contents of the file into a folder called "iTunesSetup" (or "iTunes64Setup").
Go into the folder and doubleclick the AppleApplicationSupport.msi to do a standalone AAS install.
Does it install properly for you?
If instead you get an error message during the install, let us know what it says. (Precise text, please.)