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Wednesday, December 18, 2013

Error 7 (Windows error 193) and/or "bad image" for some DLL

Error 7 (Windows error 193) and/or "bad image" for some DLL

The popup error message says that for example "C:\Program Files (x86)\Common Files\Apple\Apple Application Support\CoreAudioToolboxBAD.dll Bad Image".

Desintalling and reinstalling doesn't work. Installer fails.

Step 1: To solve the error 7, Apple claims that Microsoft .NET must be reinstalled, see: http://support.apple.com/kb/ts3074
Note that they specify the version number of .NET, for example 4 (four). In that case, if you had 4.5 installed you must first uninstall the 4.5 version, other wise the 4.0 installer will NOT work saying that a newer version is installed.

Step 2: Open an Explorer window [Windows]-e. Navigate to the the faulty dll folder. Find the bad DLL file and rename it (eg. click right on its name, choose Rename, append BAD to its name). 
Notice that the file size was wrong, it was reseted to 0.
Click on picture to enlarge.


Step 3: reinstall iTunes. A new dll file must be added next to the old, bad, renamed one, with the good size and attributes.

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