After copying a VBK and VBM file from one server to another , after a test restore the following error showed up in the logs and in Gui
Storage version  is not supported for read-only access. --tr:Failed to open storage for read access. Storage: [\\path\to\file.vbk]. --tr:Cannot apply patches stored in folder [HostFS://\\path\to\file.vb[41e6829d-533e-480f-8b38-3726d3fa47a2 (vm-4628)]] --tr:Failed to build restore point.
After my own research ( Trying to copy it locally ) and contacting Veeam support , it turns out the VBK file was corrupt some how. Recopying the file resolved this issue
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