The subject errors:

RPC 1792 - The remote procedure call failed and did not execute.

Netlogon 5719 - Unable to find domain controller.

can be caused by too many connections to a remote share, causing Windows NT to exhaust MaxMpxCt or MaxWorkItems. Use regedt32 to navigate to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters

Edit or Add Value names: (both are type REG_DWORD)

MaxMpxCt - The default is 50, the range is 1 - 65,535.

MaxWorkItems - The default depends on your configuration, the range is 1 - 65,535.

NOTE: See tip 1123.

NOTE: Increasing these items can also improve server performance.