Hello,
I've been looking for a few days now and tried a few suggestions but none of them helped so far.
I have installed a new Server 2016 with Exchange 2016 CU20 because our old Exchange server failed.
Everything seems to be fine except for the ECP page, it just won't load.
After logging in ECP I get the following page (this also happens on the local server and when a normal users logs in to ECP):
I've set all the paths for ECP, OWA, PowerShell, etc.... to the correct URL.
I also tried to rebuild the pages using UpdateCas.ps1 but this also doesn't help (OWA seems to be working fine, not tested 100% though).
In Chrome Developer Tools (F12) I see below errors:

And in Internet Explorer Developer Tools (F12) I see below:


What am I doing wrong here?

