We are facing issue logging into OWA and EWA.

OWA error: something went wrong. An unexpected error occurred and your request couldn't be handled.

EWA error: 500 Unexpected Error :(

We renewed the wildcard certificate and noticed this error after a day.

When login to ECP locally, it displayed a certificate error

We checked the IIS services bind to Exchange services. https in IIS manager is also binding to the new wildcard certificate.

Is this how we renewed the wildcard cert:

1. Import the exported PFX certificate into the Personal > Certificates store.
2. Verify that the private key attached to the cert3. Bind IIS services to certificate using Exchange Admin Center

Did we missed any steps?

Hi BlueBerries,

Firstly You should generate and import the certificate using EAC or EMS not IIS.

SSL Certificate Installation for Exchange 2013, follow the article to confirm you have not missed any steps.

Try this URL https://Exchange2013ServerName/ecp?ExchClientVer=15

There could be issue with the mailbox database causing this. Check if you can use EMS to access and check the status.

I'm still wondering where did you get the term EWA for ECP or EAC