We are planning to upgrade our MS office from 2013 to 2019. Would SAS plugin be impacted in any way? Should I uninstall and reinstall the SAS plugin too?
I would say a lot depends on what version of the SAS Add-In for Microsoft Office you have. Recent versions like 7.x and 8.x are likely to be OK. However if you are switching from 32-bit to 64-bit MS Office you will definitely need to reinstall.
The SAS Users Group for Administrators (SUGA) is open to all SAS administrators and architects who install, update, manage or maintain a SAS deployment.