By default, computers requiring agent installations and
uninstallations are added to the Pending Installations list to wait
for approval. You can approve or cancel all pending actions or each
individual pending action.
To cancel an individual pending installation
Expand Microsoft Operations Manager (default) in the
Expand Configuration in the left pane.
Click Pending Installations in the left pane.
Click the installation or uninstallation in the right pane that
you want to cancel.
Click Action on the menu bar.
Click Cancel Pending Action on the Action
Repeat Steps 4 through 6 for each action you want