OWA 2013 over Win Srv 2012 R2 stop working (ERR_CONNECTION_RESET)

Copper Contributor

A customer has Exchange Server 2013 running over Windows Server 2012 R2, OWA stop working with error ERR_CONNECTION_RESET. There was a chrome setting that can be use it as a workaround, the Allow SHA-1 server signatures in TLS setting, but there is not anymore. Does anyone know how to solve this? (I know, migration is an option, is there anything else without migration). Thanks

2 Replies


Check the IIS configuration of the website hosting OWA.

Make sure the required modules are enabled and that your binding and authentication settings are correct.

I realized that Exchange certificate is using SHA1, I think that may be this is the reason of the issue. I'm going to install a new one of SHA256, and let see