Forum Discussion
Nikolas_Athanasakis
Jul 14, 2021Copper Contributor
Exchange Server error in '/owa' application
ASSERT: HMACProvider.GetCertificates:protectionCertificates.Length<1 Description: An unhandled exception occurred during the execution of the current web request. Please review the stack tr...
- Jul 14, 2021Ok i found solution. Use this to create new certificate https://docs.microsoft.com/en-us/exchange/troubleshoot/administration/cannot-access-owa-or-ecp-if-oauth-expired
And after creating the certificate you must wait like a hour or more for changes work. Restart dont change the wait time 🙂
Asterofus
Jul 14, 2021Brass Contributor
Ok i found solution. Use this to create new certificate https://docs.microsoft.com/en-us/exchange/troubleshoot/administration/cannot-access-owa-or-ecp-if-oauth-expired
And after creating the certificate you must wait like a hour or more for changes work. Restart dont change the wait time 🙂
And after creating the certificate you must wait like a hour or more for changes work. Restart dont change the wait time 🙂
Tom_Fajt
Jul 14, 2021Copper Contributor
Asterofus Thank you for this tip it worked. One note for others. I created a new certificate and waited for almost two hours, but OWA and ECP were still not working. Then I tried to log into OWA from phone. It took a while but it loaded and stared working normaly. 🙂 Phone method tested on two different servers with the same result. Hope it helps 🙂