Having a problem in Microsoft Access?    Make this your first stop (after applying all patches first of course!):

https://support.office.com/en-us/article/Fixes-or-workarounds-for-recent-issues-in-Access-54962069-14f4-4474-823a-ff7e5974a570?ui=en-US&rs=en-US&ad=US

and see if it's a known issue.   The Access team will be trying to be very diligent in posting all known problems.
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