How to fix SB_BLOCK_NOT_PRESENT error in Veeam
The Problem Veeam is failing to back up one of your Hyper-V VM’s and is throwing the error: VHDx:CVhdxDisk.InitialValidation: Invalid bitmap block (all bitmap block of fixed and dynamic disks must be in SB_BLOCK_NOT_PRESENT state) Agent failed to process method {VHDx.GetDiskInformation} The Cause The error is telling us that Veeam’s VHDx InitialValidation function failed as the VHDx had blocks in an invalid state. According to Microsoft’s OpenSpecs Documentation for VHDx, the only valid Sector Bitmap Block state for fixed and dynamic disks is SB_BLOCK_NOT_PRESENT...