Hi All
I have been updating our exchange server with all the windows updates so I can run the CU23 update,
I have temp done the iis rewrite rules advised and stopped all external 443 access whilst we patch the server BUT
I can no longer get in to ECP or OWA, PowerShell works ok as long as I run as admin.
I get am error when going to OWA from the server or ECP from the server
Server error in /owa application
The length of the query string for this request exceeds the configuration maxquuerystringlenghth value
I am currently on exchange 2013 CU18 running on a Server 2012R2 server with all the updates run
I dont want to try run the CU23 update in case it kills exchange due to this error above but need to do this so we can migrate the exchange to Office 365
any ideas please
Thanks in advance
