You can manage the
Office Document CacheA client-side cache for documents that are stored on Web servers. Documents are seamlessly replicated from this local cache, and uploaded to servers as required, enabling faster and more robust file access. by customizing the settings in the Microsoft Office for Mac Upload Center.
Do any of the following:
 | Turn off the bouncing Dock icon |
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On the Upload Center menu, click Preferences.
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Clear the Bounce the dock icon once when there is an error check box.
 | Clear the Office Document Cache |
You can clear the Office Document Cache at any time. Files that are waiting to be uploaded and files that have errors are not deleted.
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On the Upload Center menu, click Preferences.
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Under Office Document Cache, click Delete Files.