|Just tried to create a snapshot of a VM and got the following error:
X Another task is already in progress.
Didn't have this error message for a while and couldn't remember how to fix it. So my good ol' friend Google found the following:
To restart the management agents on ESX host:
Log in to your ESX Server as root from either an SSH session or directly from the console of the server and launch the following commands:
service mgmt-vmware restart
service vmware-vpxa restart
Once this was done, the snapshots could be created again.