First try this:
a. Click File menu, click Options, Add-in, click Go button in the Manage: Com-in Add.
b. Check if there are any add-ins, clear the checkbox to disable them.
c. Close the Office program and restart it.
d. Add one check back each time to the list of Add-In, restart the Office program, and repeat the above procedure. Once the issue reappears again, we can determine which add-in causes this problem and then disable it.
if that fails, try a clean boot and see if it does the same....
Let me know if you run into any trouble...
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