When attempting the restore I get the log into Microsoft with the device code and it connects fine, hit next and veeam errors out saying Failed to open mailbox: gives the name Mailbox does not exist. I can guarantee the mailbox does exist.
Question
Failed to open mailbox when attempting to restore email item.
+7The account you're authenticating with is not granted with ApplicationImpersonation role. This permission is required to work with EWS APIs and access mailboxes.
https://forums.veeam.com/veeam-backup-for-microsoft-365-f47/restore-questions-with-mfa-t69254.html
Veeam Vanguard | VMCE 2024 | Microsoft MVP | Cisco Insider Champion | CISCO CCIE #4531 | Web Site - carysun.com | Blog Site - gooddealmart.com | Blog Site - checkyourlogs.net | X: @SifuSun | LinkedIn: https://www.linkedin.com/in/sifusun/ | Amazon Author: https://Amazon.com/author/carysun
+21Do you have any more details on the error? This is very generic, so it is hard to give advice or help based on this message.
You may want to check the log directory for more details - C:\ProgramData\Veeam\
Otherwise, I would suggest a case with Support and checking on the forums as well - https://forums.veeam.com
**EDIT - I see Cary shared details so check those out**
Chris Childerhose - VMCA2024 | VMCE2023 | VMCE-SP2024 | Veeam Vanguard 8* | Veeam Legend 5* | VUG Canada Leader | vExpert 6* | Toronto VMUG Leader | VCAP-DCV/VCP-DCV | Object First Ace | Cisco Champion | Twitter: @cchilderhose | Blog Site – https://just-virtualization.tech
+14Max M. | Systems Engineer @Veeam | VMCE/VMCA | VeeaMVP 2023 | former Legend & Vanguard
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