Subject losing connection with server on a local PC

Hello! I have a Delphi app with Firebird. Everything in a single PC which is accesed via Remote Desktop by 5 or 6 users.

It worked fine for much years. But since yesterday, My app reports an error of "conection lost". I'm used to see this error when working on a local network and some PC lost the conection with the sersver. But never saw it on a local PC.

The Windows log reports this (i'm attaching the text bellow)

Do you think that I should just reinstall FB as Windows suggest? Or the problem may be another? 

Anyone had a similar situation before?




The description for Event ID 281 from source FirebirdGuardianDefaultInstance cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event: 

Abnormal Termination: "C:\Program Files\Firebird\Firebird_2_5\bin\fbserver.exe": terminated abnormally (4294967295)v