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Keyset does not exist (Error Code 80090016)
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This article will cover how to resolve a common TPM issue which results in Office applications no longer allowing documents to be opened or saved.
Before you start
If your company devices are enrolled and managed by Intune you will most likely need to contact support. Otherwise this fix can be 100% peformed by the user without admin priviliges.
Please see the video below:
Issues following the video
If you have any issues whilst following the video or peforming the fix, please feel free to contact our support desk via the usual methods.