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Named Pipes - Lanmanserver Crashing - Mapped Drives disconnecting

Here is my situation:

I am running Windows Server 2003 on several servers, two of which are an application server and a database server (SQL Server 2005).  The system allows connections through TCP/IP to the database, but not named pipes ( for all applications on the application server ).  Every 2-4 hours, the lanmanserver ( Server ) service will hang and cause mapped drives and connectivity on the application server to hang.  Rebooting the server will remedy the situation, with the cycle repeating about 2-4 hours later.

Named pipes and TCP/IP are enabled on SQL Server, and both servers have been updated with the most current windows updates.

Any idea what may be causing the lanmanserver service to hang?
Microsoft Legacy OSMicrosoft SQL Server 2005TCP/IP

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8/22/2022 - Mon