If you tried uninstalling OPS 2007 agent and got an error, You should try the following: 1. Run "cleanMOM.exe /cleanagents" on the client. This will not completely uninstall the agent but it will let you reinstall it so you can then uninstall it 2. Install OPS 2007 agent with a different management group name (the name doesn't really matter). Continue reading at our new blog - Force Remove OPS 2007 Agent