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BugZero found this defect 1757 days ago.
The Microsoft Windows OS is stuck on the boot screen after the Veeam CBT driver is installed.
The issue occurs if you have the Veritas System Recovery software installed on the Veeam Agent machine. The Veeam CBT driver is incompatible with the VTrack driver provided by Veritas.
Resolve the issue in one of the following ways: When your machine boots, press the F8 key before the Windows logo appears. Select the Last Known Good Configuration option. Remove the Veeam CBT driver with Veeam Recovery Media. For details, see Removing CBT Driver with Veeam Recovery Media. After the Veeam Agent machine is rebooted, remove the VTrack driver and install the Veeam CBT driver again. For details, see Installing Veeam CBT Driver.