- You have installed Microsoft .NET Framework 3.5 Service Pack 1 (SP1).
- You use System Monitor (PerfMon) to monitor the performance of running ASP.NET applications.
Note The Sessions Active counter indicates the number of sessions currently active. For more information about how to monitor ASP.NET applications by using PerfMon, see the "More information" section.
Hotfix Replacement InformationThe hotfix that corresponds to KB969722 has been superseded with the hotfix KB981201, which contains all fixes that were previously included in KB969722 . You should use the hotfix KB981201 to fix the issues described in KB969722. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
For example, this issue may occur when you try to access the ASP.NET Performance counters by starting PERFMON with the /WMI switch or by using Microsoft Operations Manager (MOM) or Systems Center Operations Manager (SCOM).
Microsoft are still investigating this issue. However, you can use the following procedure to workaround this issue:
- Open Wbemtest.exe
- Connect to the root\cimv2 namespace.
- Delete the Win32_PerfRawData_ASPNET_2050727_ASPNETAppsv2050727 class.
- Winmgmt /resyncperf
- Net stop winmgmt
- Net start winmgmt
Article ID: 969722 - Last Review: Mar 29, 2017 - Revision: 4