Standard indicators, custom indicators or bought from the market indicators?
If its the 3rd, then you have to login into your community account in Tools >> Options >> Community.
Otherwise, reinstall your MT platform.
You need to delete the files within Market folder. Then download them again and will work
where do i find market folder please
You can delete from the folder you posted above or from MT4 terminal
When I bought EA so I saw the Market folder -
May be it's enough just to open your indi form the indo folder in the editor an (re-)compile it again.
From MQL5 Market the code is not available for recompile. Every time Windows updates I have to delete and download again all purchased products from Market