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So all of a sudden popular websites (including stackoverflow.com) stopped being displayed in IE9, with this compatibility warning popup from IE:

"A problem displaying XXX.com caused Internet Explorer to refresh the webpage using Compatibility View."

I found out that it was caused by certain fonts (Adobe type 1) that were recently installed on my PC being incompatible with IE9. I uninstalled a Helvetica font and all is well.



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closed as not a real question by studiohack Feb 8 '12 at 17:34

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.

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