How to renew certificate for Veeam Backup for Microsoft 365 Tenants application.
If you like you can use a self-signed certificate. This certificate must be in .pfx format. See How to generate Self-signed Certificate with powershell for Veeam backup for Microsoft 365
If you like you can also use OpenSSL See
How to generate Self-signed Certificate with OpenSSL for Veeam backup for Microsoft 365
Summary
This acrticle describes how you can renew the certificate for Veeam Backup for Microsoft 365 tenant application
Prerequisites
Make sure you have acces to our Veeam Backup for Mircosoft 365 Service Portal reseller level
login to Veeam Backup for Microsoft 365 Service Portal reseller level
Go to “My resources”
Click on “certificates”
Click on the “+” sign
Select the pfx and enter password and click “save”
Pfx is is now succesfully uploaded
Now go to the tenants general settings for which you want to renew the certificate. Click under “Backup & Restore” on “select certifcate” button
Select the newly uploaded certificate and click “save”
Now click on one of the services to deploy new applications with the new certificate
The new applications wizard starts
follow the instructions to make a connection to the Microsoft tenant with an admin user
Open a new browser and browse to the following location http://microsoft.com/devicelogin
Now enter the code that is displayed in step 11 and click “Next”
Enter the username of a global admin within the tenant and click “Next”
Enter the password and click “Sign in”
On the next screen click “Continue”
Now the connection is made and you can close the authentication window
Here click “Save”
Now you have to wait till deployment is complete
on completion you will see the following message in right top corner
Now the certificate for the application is renewed.