This may be due to many possible causes, please verify the problematic host has enough free space aqnd also run a systm health check from lab management, that hopefully will give us a more detailed information about the problem.
I am also facing the same problem similar to the one which was given in above problem description . Can someone please help me out on a solution for this.
I noticed my controller has enough of free space
And I tried the system health check and only the "check connectivity between the controller and load generators " option doesnt seem to end for the problematic controller but the others check are all successful.
Reconfigure Host performs several activities in the host machine. From the PC Administrative Guide: Reconfiguring a host resets the host license, the Performance Center system user, and the Communication Security passphrase on the host machine.
As Editus said, this problem has several possible causes, some temporally (like network delay) and some that need investigation.
I suggest you restart the problematic Host, run the Reconfigure Host and later the System Health to check more in deep.