We have a LAN where workstations are randomly losing network connectivity for brief moments of time. The workstations can also take a long time to login to the domain.

During our troubleshooting we have found an error log on a few Windows 7 workstations:

Warning BROWSER 8021 The browser was unable to retrieve a list of servers from the browser master \random-pc on the network DeviceNetBT_Tcpip_{BBABCDE9-D8A0-4399-93F2-492FE0848B12}. The data is the error code.

What do these errors mean? What computers should have the Computer Browser service enabled, workstations and/or servers?

The environment is a mix of Windows 7 & Windows XP workstations on a Windows Server SBS 2011 SP1 domain.

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