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When attempting to install Veeam Backup & Replication version 12.1, 12.2, or 12.3 on a machine where Veeam Backup for Microsoft 365 version 8 is already installed, the Veeam Backup & Replication install fails with the error: A later version of Veeam Explorer for Microsoft Exchange is already installed.
This error occurs because the Veeam Explorer for Microsoft Exchange package deployed by Veeam Backup for Microsoft 365 version 8 is newer than the one used by Veeam Backup & Replication. Note: The issue related to all three Veeam Explorer tools that Veeam Backup for Microsoft 365 v8 deploys, but the error shows Veeam Explorer for Microsoft Exchange as that is the first Veeam Explorer that Veeam Backup & Replication attempts to install.
Options: Resolution — If you've already attempted to install Veeam Backup & Replication. Prevention — If you have not installed Veeam Backup & Replication or Veeam Backup for Microsoft 365.
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