Troubleshooting Windows Performance Monitoring

The following error messages can occur when monitoring Windows-based machines:

Error Message	Possible Cause	Resolution
`Computer Name Not Found`	You might receive this error message when trying to monitor a remote computer from a non-administrator account.	Enable remote monitoring on a Windows NT computer.
`Error=AGENT_ERROR_TCP_SEND_REQUEST_FAILED`	This problem can occur if your organization uses proxy auto-configuration files to direct requests to a proxy server, and you specify the automatic configuration script address rather than the registered name of the proxy server. If your organization uses a non-passive proxy, in most cases you must also specify the port number.	Verify the following proxy settings: Correct entry of the proxy server name, user name, and password Ability to ping the proxy server from the RSM computer Ability of the RSM computer to connect to the portal computer
System 5 - Access denied	When monitoring a machine with Windows 2008 or newer using CUSTOM / PERFMON option, logging in with credentials of a user added to the Administrators group generates a `System 5 - access denied` error.	The user with which you run Performance Explorer needs to be added to the Administrators group on the remote computer that you want to monitor. If you specify different user credentials in Performance Explorer’s Data Source Wizard, that user also needs to be added to the Administrators group on the remote computer. To monitor remote machines successfully, you need to launch Performance Explorer (PerfExp.exe) under the same user account that is being used to connect to the remote machine(s). Tip: To launch PerfExp.exe under a specific user account, press `shift + right-click` and select Run as different user.

Error Message

Possible Cause

Resolution

Computer Name Not Found

You might receive this error message when trying to monitor a remote computer from a non-administrator account.

Enable remote monitoring on a Windows NT computer.

Error=AGENT_ERROR_TCP_SEND_REQUEST_FAILED

This problem can occur if your organization uses proxy auto-configuration files to direct requests to a proxy server, and you specify the automatic configuration script address rather than the registered name of the proxy server.

If your organization uses a non-passive proxy, in most cases you must also specify the port number.

Verify the following proxy settings:

Correct entry of the proxy server name, user name, and password
Ability to ping the proxy server from the RSM computer
Ability of the RSM computer to connect to the portal computer

System 5 - Access denied

When monitoring a machine with Windows 2008 or newer using CUSTOM / PERFMON option, logging in with credentials of a user added to the Administrators group generates a System 5 - access denied error.

The user with which you run Performance Explorer needs to be added to the Administrators group on the remote computer that you want to monitor. If you specify different user credentials in Performance Explorer’s Data Source Wizard, that user also needs to be added to the Administrators group on the remote computer. To monitor remote machines successfully, you need to launch Performance Explorer (PerfExp.exe) under the same user account that is being used to connect to the remote machine(s).

Tip: To launch PerfExp.exe under a specific user account, press shift + right-click and select Run as different user.