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I recently upgraded my Adobe CS4 Des. Standard to CS5. For some reason Adobe didn't overwrite CS4 but instead installed CS5 as a whole new series of programs. Seeing as I didn't want both CS4 & CS5 I un-installed CS4.

Problem was, it also destroyed all my file associations. So .ai, .psd, .indd etc... aren't associated with any program.

Theoretically this should be easy to fix. Right-click my_file.ai -> properties -> Change open with application -> navigate to Illustrator.exe in program files and click open. And that's supposed to do it.

Wrong, When I navigate to Illustrator and try and set it as default program, it simply does nothing. No error, but no association

So I'm stuck. Is there a way to do it in regedit? Or is there something I'm missing?

OS is Windows 7

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2 Answers 2

up vote 11 down vote accepted

I have good experience with Default Programs Editor - "powerful, multi-featured file association utility for Windows". Free and small, no install needed. I googled it while I was looking for some user-friendly way to change file icons :-)

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excellent utility –  Factor Mystic Jun 8 '11 at 12:27
I'll give it a go. edit: Yes! it worked. –  Emmanuel Jun 9 '11 at 8:18
This worked for me even when all the built in Explorer methods failed. Thanks! –  Coxy Feb 8 '13 at 7:30
For reference, my problem was with having 3 versions of MS Project installed. Not even uninstalling the old ones would let me associate the files to Project 2010. –  Coxy Feb 8 '13 at 7:30

You can try using Default Programs applet in Control Panel to manage the file association. If this doesn't work, you can try uninstalling the Adobe programs and installing CS5 again. A clean install should set the file associations correctly.

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Tried this, no luck though –  Emmanuel Jun 9 '11 at 8:19

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