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Related (for Windows XP: IE8 search provider corruption keeps forcing upon me?)

Windows 7, with Internet Explorer 9 and no add-ons loaded will bring up this message every time it starts:

A program on your computer has corrupted your default search provider setting for Internet Explorer.

Internet Explorer has reset this setting to your original search provider, Bing (

Internet Explorer will now open Search Settings, where you can change this setting or install more search providers.

When I click OK, it brings up the Manage Addons page, and I can't do anything with the Search Providers. Looking at my thread about How to Manually edit the Search Providers in Windows Internet Explorer 9, I tried going through the registry without finding much help. Resetting IE (Tools->Internet Options->Advanced->Reset) did nothing. HiJackThis reported nothing out of the ordinary, and this occurred in Safe Mode as well.

I created a new user account, and the new account did fix it, but it is undesirable to copy all the user data over and change names. I also tried uninstalling IE9 through Installed Updates, but the same issue happened with IE8. What else can I try?

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up vote 3 down vote accepted

As found on this blog, it seems to be an issue with a single file. I quit Internet Explorer, navigated to C:\Users\<username>\AppData\Roaming\Microsoft\Protect\, and deleted the CREDHIST system file. After this, I went back into Internet Explorer, and the message is gone! I tried restarting the computer, and it's still gone too

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