After an update of PRTG, PRTG Server.exe does not start anymore. At the end of the installation, when the PRTG services try to restart, I get the following error message:
PRTG Webserver could not be started properly.
Signature of C:\Program File(x86)\PRTG Network\64 bit\PRTG Server.exe is not valid.
Trying to manually restart PRTG does not work either, the service just stops. What can I do about the invalid signature of the PRTG server? How can I get PRTG up and running again?