Solved Object reference not set an instance of an object

[oolivella]

a lot of users can't start webmeetings, and some others are falling from started ones.
They report this error:
"Object reference not set an instance of an object"
what's happening now??

 

[oolivella]

now it works. After 20 minutes of calls and complaints from our customers...

what's the reason of this error? how can we avoid it?