We sometimes see weird name resolution issues on a remote subnet, e.g. where a computer can't be accessed because it seems to have the wrong IP address. 9 times out of 10, this is because the local NetBIOS Master Browser has gone nuts and needs to be taken down. The NetBIOS Master Browser is automatically selected by the computers on the subnet, and it's not always obvious which computer has the role.

This PowerShell one-liner will query the local subnet and report which computers are advertising themselves as a Master Browser.

net view | ? { $_ -match '^\\\\(\S+)' } | % { $matches[1] } | ? { nbtstat -a $_ | sls '__MSBROWSE__' }

And here it is broken apart and explained:

net.exe view |                                  # list netbios devices on local network
    where-object { $_ -match '^\\\\(\S+)' } |   # only use lines formatted like '\\computername'
    foreach-object { $matches[1] } |            # extract the computer name
    where-object {                              # only return computers which satisfy the following:
        nbtstat.exe -a $_ |                     # ...of all the netbios names that computer advertises...
            select-string '__MSBROWSE__'        # ...which ones contain '__MSBROWSE__'?
    }