I have Norton antivirus and last time it's beginning to block (copy, move, delete, edit) and not open Excel template (Macro enabled) files with the extension .xlsm, write [Window Title] Operation did not complete successfully because the file contains a virus or potentially unwanted software.
All: Norton is blocking those files exclusively because "macros" are enabled. Its due to the Norton AntiVirus Office plug-in being enabled. Disabling Macros is one option to consider. Microsoft suggests disabling of the Office plug-in, allowing Norton auto-protect to scan documents instead. I would NOT recommend disabling it. Your mileage will vary and the option is there as your needs require.
Microsoft recommendation: https://support.microsoft.com/en-au/topic/how-to-use-office-programs-with-the-norton-antivirus-office-plug-in-abf30b68-a357-1fc2-85aa-dbb5d5a6a03f
Norton suggestions are here: https://support.norton.com/sp/en/us/home/current/solutions/v132996618
SA
File Attachment:
Error screenshot
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How to post an image in the forums
https://community.norton.com/en/forums/how-post-image-forums-0
I attached screenshot