thank your for your answer.
Unfortunately the issue is still there. I did not enable the Pulseway Group Policy.
After deleting the registery entry resetting all the configuration of Pulseway, the access through wmiprvse is active as soon as I start the Pulseway service.
The time betwenn the access is exactly 60 seconds.
I will try to uninstall Pulseway, deleting the registery again and then reinstall it and report back.
EDIT: Unfortunately even a new installation did not help. I guess the issue is caused by an update of the Service (auto update is on) Is there a way to revert back to previous version of Pulseway?
EDIT2: I reverted back to an old version that I had downloaded back in 2016 (vers. 4.9.1) and disabled the autoupdate function but the problem persists.