WAF Error in Maps after Sharepoint Install

[MaryEllen_Perko]

We’ve installed Esri Maps for Sharepoint on our  Sharepoint servers and when testing we get the following error whenever we open/view a map. Does anyone know where we might look for the cause?

Thanks.

[ThomasMontefusco]

I believe this is a Web Application Firewall error.  Check Firewalls.