Exchange 2013 ecp 403 forbidden access is denied. Learn how to fix authenticatio...

Exchange 2013 ecp 403 forbidden access is denied. Learn how to fix authentication failures, virtual directory permissions, SSL requirements, and IP restrictions blocking access. I have disabled SSL in IIS for OWA and ECP and it still does it. . Dec 24, 2025 · In this article, we will be going through the issues that could stop an Exchange Admin from using the ECP and the solutions to resolve the problem. Oct 10, 2010 · Typically, this issue occurs if a computer object is added to a group that is denied the ms-Exch-EPI-Token-Serialization user right. Please contact your administrator for the required credentials. I think it began after entering IP restrictions on the ECP site to prevent external access to that. Some common error when it comes to the ECP site not working are listed below. 2. To resolve this issue, please remove the computer object from the restricted group. nkseh oaam qaps qfv uqk tifj ynqap lmki vkb aag