If some or all of the RAS or RRAS counters are missing in Performance Monitor, one or more of the following conditions probably exist on your Windows NT computer:

1. The Rasctrs.dll is missing or corrupt.

2. The Close, Collect, Library, and/or Open values are missing at:


To resolve the problem, delete the Rasctrs.dll file and replace it from your latest Service pack. Then use Regedt32 to add any missing registry values at:


The registry entries should be:

Value name: Close                              Data type: REG_SZ                              Data: CloseRasPerformanceData                               Value name: Collect                              Data type: REG_SZ                              Data: CollectRasPerformanceData                               Value name: Library                              Data type: REG_SZ                              Data: rasctrs.dll                               Value name: Open                              Data type: REG_SZ                              Data: OpenRasPerformanceData
NOTE: to extract Rasctrs.dll from the RRAS installation file, type:

mpri386.exe /T:<directory path> /C

where <directory path> is the folder you want to put the files in.