Month: October 2015

There are multiple causes for Outlook clients to receive authentication prompts.  This can be caused by impaired AD performance where the DCs are negatively impacted and cannot respond quickly.  This can be caused by semaphore timeouts, due to NTLM bottlenecks.  In Exchange 2010 the CAS Array uses NTLM by default, and the recommendation is to use Kerberos.

Sometimes the authentication prompts may be… Read the rest “Restart Exchange 2010 CAS And Authentication Prompts”