The server service uses “srvsvc.dll” file. And Workstation service uses “wkssvc.dll” file to run.
It is possible that the “.dll” files have got corrupted. Or “Server / Workstation” service’s settings have changed.
We advise you to please replace these two files & registry with the default one.
Here we are giving you the default .dll files, and default registry files.
Default Registry Files
Download these files and do double-click on them to merge them to registry one by one.
Default “.dll” files
Download these files and copy / paste to “C:\Windows\System32”. Replace them if asked. Do it in safe mode if it doesn’t replace properlly.
Please reply if need more help.