Exchange Backup fails because of EWS issue

hello ​@Eugen 

Did you check the connectivity between the Access nodes and EWS?

Also, verify if there have been any changes or modifications to the EWS, like the example below.

check this article 
https://learn.microsoft.com/en-us/answers/questions/565600/local-ews-error-the-request-failed-the-remote-serv

also can you provide us with the details of the Exch environment are hybrid or on-perm ?

Best Regards,
Mohamed Ramadan
Data Protection Specialist

Hello Mohammed, 

Thank you very much, I can check it on the EWS. Can you please describe to me, how can I get there in order to check the modification date?

Our Exchange environment is on prem.

Tanks in advance

Eugen

hello ​@Eugen 
thanks for the update 

you can check it from log in to exchange admin center as administrator then go to servers tab then virtual directories you will found above pic with  the modification date 

Best Regards,
Mohamed Ramadan
Data Protection Specialist

Hi, 

I still get following error (see picture below). 

I have also disabled the EWS Feature, but I still get the same error. Can anybody help me with this issue?

the error code from the job look like following:

check: EWS Server Connectivity Result: Failed Failure: Unable to connect Exchange Server. Exchange EWS URL [https://owa.name of the host.de/EWS/Exchange.asmx] is not accessible using service account [administrator@companyname.de]. Reason: The request failed. Der Remoteserver hat einen Fehler zurückgegeben: (401) Nicht autorisiert. Please verify connectivity.  check: EWS Server Connectivity Result: Failed Failure: Session(s) failed for all On-Premise Service Accounts. Please re-check the credentials (or) re-check server connectivity

does anybode know the answer for the issue? We have checked the account and logedin into EWS and everything worked fine, but commvault still write back, that the issue service account still there.

Hi ​@Eugen .this is known error with Exchange check readiness internal defect is present for engineering team to address this, but it won’t be having any impact on backup.

if there is backup issue then please verify the requirement 
https://documentation.commvault.com/2024e/expert/configuring_service_account_to_manage_exchange_2019_messages_using_exchange_web_services.html