Windows XP PDF File associations broken

After updating to Adobe Reader XI (Windows XP 32 bit), my PDF file associations no longer worked.
When I double clicked on a pdf file, it would open using a different application (Hex Editor Neo) instead.
The file thumbnails in Windows Explorer did not show the usual Adobe PDF icon: The icon for an unknown file type was displayed.
I first tried rebooting - no difference.
When I looked at the file type associations (via Folder Options in Control Panel), PDF files no longer appeared in the list of registered file types.
When I tried to add a new entry manually, it did not appear to get saved in the registry, so it made no difference.
Clicking the 'Advanced' button under the 'File Type' tab did nothing - the usual 'Advanced' dialog box did not appear.
In the end I had to uninstall Adobe Reader XI and re-install from scratch to get theings to work properly.
Is this a known issue?

This is more informative: where in the registry does Windows store, with which program to open certain file types? - Super User. I went to HKCU\software\classes\applications and added a new key acroRD32.exe
Now in the list of file types in the default programs: associate a file type with a program, I find that I can change PDF to adobe reader.
However, I still can not click on a PDF file and have it automatically open in adobe reader. This is however a minor nuisance. More important to me is that I can not see pdf icons in windows explorer. I have numerous pdf pictures and I would like to find them easily in explorer.

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Pdf file association broken

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Reinstalling Adobe Reader should normally fix the file association; I don't know why it does not in your case.
Suggestion: try running the Acrobat Cleaner Tool http://labs.adobe.com/downloads/acrobatcleaner.html then reinstall Reader.
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I have a feature for providing to Microsoft. See the following:
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Hi,
Thanks for your suggestion, If you have any suggestion or feedback to Microsoft Products, you can refer to the link below to provide your suggestion.
https://connect.microsoft.com/
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TechNet Community Support

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graysky wrote:
Inxsible wrote:
and there is no option there to make it the default program to open that type of file with ?
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GOT IT!
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Inxsible wrote:Right click on any pdf file and go into Properties. Then select Open with tab and select the program that you want to open it with.
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Windows XP PDF File associations broken

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