Sage 300

Sage 300 was working fine and the next day the user was getting the error "Could not open the UI. the system may be busy because another application (such data conversation application) has locked the company's database. Other wise the UI was not opened…

Just upgraded a client and Upgrade worked fantastic. on server no problem signing in on Sage 300 2016 with product update 1 loaded. The problem started with the workstations. on some it load the sage logo but does not give the signon screen. (then unloads…