Exchange Server WAS ID 5022

Hello,

I restarted my server after a week of downtime.
After reboot no service works (OWA, ECP, Shell etc...). In the windows event I see WAS ID 5022.
WAS can't create process worker for app pool.

The Windows Process Activation Service could not create a working process for the application pool 'MSExchangePowerShellFrontEndAppPool'. The data field contains the error number.