As for your problem,I'm sorry, I have no experience of XL2013. A quick search on the Net indicates that many users seem to suffer the same problem.

If you decide to post the question on other forums, would you please post a link to those threads ? (read this for more explanation). Thank you

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Using O365 v2503 - Did you know you can thank someone who helped you? Click on the tiny scale in the right upper hand corner of your helper's post