I have installed Workstation Pro 16.1 on Fedora 33.  It fails to start.  After some investigating it comes down to this

modprobe vmmon
modprobe: ERROR: could not insert 'vmmon': Key was rejected by service

The same happens for the vmnet module.

running dmesg shows

vmmon: Loading of unsigned module is rejected

I have Workstation Pro 16.1 running on Fedora 31 and Fedora 32 and it works fine there.  So obviously something has changed in Fedora 33 to cause this problem.  So what do I need to do to fix the problem?

Any help is appreciated

Paolo