I’ve had a couple of clients today with an interesting issue, where their Word, Excel and Powerpoint documents all turn orange and do not open when double clicked.
It seems that the installation of windows update kb2589275 causes the issue. More specifically, the users that I have had affected so far have had Office Pro Plus 2010 installed and it appears that the update adds Microsoft Office 2010 to the Program and Features.
I’ve had success in resolving the issue by uninstalling the Microsoft Office 2010 program, leaving the original version installed (preferred method), and also on another machine doing and Office repair on the original installation of Office 2010 Pro Plus. It is also possible to just recreate the file associations to resolve the issue but I think it is much better to just have the proper (intended) copy of Office installed.
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