I have a 2008 R2 MSCS cluster. On both physicals it seems that certain performance counters are missing. Other servers with the same OS have the counters showing up under perfmon. For example: Memory - Cache Faults/sec -> * Memory - Pages Output/sec -> * are not present on the two affected servers. But : Memory -> Page Reads/sec -> * Memory -> Page Writes/sec -> * are present. So it seems like only 'some' of the counters are being registered/recorded. After reading 1 blog post, I connected to the 2 servers using EXCTRLST.exe and noticed that "Performance Counters Enabled" was not checked for the ASP.NET entries only... I re-checked these but seems unlikely that was related... the issue still persisted. My question is: 1. Does anyone know why certain performance counters would be missing and others present? (to me it would seem to be an all or nothing thing) 2. How do I re-enable the missing counters? Thanks, Rob

Hi, Please try the following commands to rebuild Performance Counters with elevated privilege: C: CD\windows\system32 LodCtr.exe /S:Backup_Original.INI LodCtr.exe /R:PerfStringBackup.INI For more information, please refer to the following Microsoft KB article and TechNet article: How to manually rebuild Performance Counter Library values http://support.microsoft.com/kb/300956 How to rebuild performance counters on Windows Vista/Server2008/7/Server2008R2 http://blogs.technet.com/b/yongrhee/archive/2009/10/06/how-to-rebuild-performance-counters-on-windows-vista-server2008-7-server2008r2.aspx Regards,Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.