MFA App ID deprecation in Exchange Online (4374900)

In case of changes https://techcommunity.microsoft.com/t5/exchange-team-blog/mfa-app-id-deprecation-in-exchange-online/ba-p/4036067 we have implemented a fix in current CU (MAM 8.8 CU3 and 8.7 CU7).

When using username and password for Exchange Online in Addressbook Manager and OWA, connection issues may occur starting on March 2024. 

Clients can make changes immediately or they can wait for connection issues.

If Entra ID application is used for connection, there should be no issues.

1. Create Entra ID application like described in documentation
2. Install CumulativeUpdate on MAM server (MAM 8.8 CU3 and 8.7 CU7)
3. Open Exchange Online server properties in addressbook manager and connect with Client ID and Client Secret
4. Install CU on server where OWA Extension is installed
5. !!!!!!!!!!DO not reinstall the OWA extension !!!!!!!! (new files from CU will be replaced)
6. Once it is installed open  C:\Program Files\Metalogix\MAM4exchange\Tools\OWA
7. Run exchangePamOwaNetInstallation.exe
8. Configure all necessary fields

Once this is done there should be no issues related to Exchange Online connection.