Excel opening as Read Only

[SeldomFixit]

My Excel files open as read only and won't save added information. Trying to save PDF, asking for Admin permission ( I am ). Rename folder results in same Admin request.
I suspect these are all related to Bitdefender getting too big for its boots but whereas granting application access permission has solved this in the past, it is no longer doing so.
Win 10. Bitdefender Total security 2018 Office 2016. I've unchecked the read only tabs in the individual application properties.
Any and all suggestions welcome. SF

[FullOppositeRudder]

Perhaps start with a Google search based on "excel locked in read only". There are a variety of solutions canvassed out there; too many to point to any one page as having the definitive answer.

FOR

[SeldomFixit]

Thanks FOR. Been there and got the T shirt. That's why I've turned to the good bods on PPRuNe

[noughtsnones]

It might be possible to accidentally lose the properties by saving a copy first in the open format of LibreOffice Calc, then opening the revision in EXCEL. This may also lose any other embedded EXCEL particular functions!
0'n'1

[SeldomFixit]

Thanks for the replies folks. As I suspected, BitDefender was the culprit. Running a reinstall on that fixed the issue. Now I'll just wait for it to do it again

[FullOppositeRudder]

Thanks for getting back to us with the answer . Some of these programs / applications are much more "helpful" than they need to be.

FOR