Invalid Windows Performance Counters

The Performance Check queries Windows Performance Counters. The Invalid Counters message may appear if:

• The Agent service does not have sufficient permissions to query the counters.
• The counters are note enabled on the device.
• The counters are corrupt and require a rebuild.

Agent service account permissions

If the Agent service account does not have sufficient permissions, you may see an Invalid Counters message.

• Change the Agent service to an account with sufficient privileges. For details, seeHow to change the Advanced Monitoring Agent service logon account.

• If changing the account is not possible, add the Agent account to the built-in groups Performance Log Users and Performance Monitor Users to grant permissions/

Enable the Windows Performance Counters

Windows Performance Counters must be enabled for the Agent to retrieve data.

1. Open the Windows Performance Monitor utility (Start > Run > perfmon).

2. Confirm that the following counters appear in the System Monitor main window:

   • Object: Memory — Counter: Pages/sec

   • Object: PhysicalDisk — Counter: Avg. Disk Queue Length — Instance: _Total

   • Object: Processor — Counter: %Processor Time — Instance: _Total

3. To add a counter, right-select the System Monitor details pane and select Add Counters, or select the button on the toolbar.

4. After making changes log in to the Agent, then remove and reselect the required Performance Checks.

Corrupt Windows Performance Counters

If counters are enabled but missing, show unusual values, or contain no data, you may need to rebuild the performance counter library.

You can rebuild the library by:

• Editing the registry manually.

• Using LODCTR, which updates Performance Monitor counter names and descriptions.

For details, see the Microsoft article: http://support.microsoft.com/kb/300956/en-us

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