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Can not back up Guest VM (Ubuntu) RVCIAP001 on Hyper-v Host RVVM004 using virtual protection > : CreateVSSSnapshot: USNAPError! Writer has failed after PrepareBackup request. - Connect IT Community | Kaseya
<main> <article class="userContent"> <h2 data-id="issue"><strong>ISSUE</strong></h2> <p>Can not protect Guest VM (Ubuntu or Linux) on Hyper-v Host. Error is:<br> CreateVSSSnapshot: USNAPError! Writer has failed after PrepareBackup request.</p> <h2 data-id="resolution"><strong>RESOLUTION</strong></h2> <p>There are some important recommendations (requirements) that Microsoft indicates in the following two documents below (in Notes section): </p> <ol><li>Use only native virtual hardware, not emulated.</li> <li>Use the NOOP Scheduler.</li> <li>Use only static MAC addresses, as there are issues with dynamic MACs when using Linux VMs on CSVs</li> </ol> See the Microsoft documents in the Notes section for instructions on how to perform this.<h2 data-id="notes"><strong>NOTES</strong></h2> <p><a rel="nofollow" href="/home/leaving?allowTrusted=1&target=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows-server%2Fvirtualization%2Fhyper-v%2Fbest-practices-for-running-linux-on-hyper-v"><span style="color: #0066cc;">Best Practices for running Linux on Hyper-V</span></a><br><a href="/home/leaving?allowTrusted=1&target=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows-server%2Fvirtualization%2Fhyper-v%2Fbest-practices-for-running-linux-on-hyper-v">https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/best-practices-for-running-linux-on-hyper-v</a><br><br><a rel="nofollow" href="/home/leaving?allowTrusted=1&target=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows-server%2Fvirtualization%2Fhyper-v%2Fsupported-ubuntu-virtual-machines-on-hyper-v"><span style="color: #0066cc;">Supported Ubuntu virtual machines on Hyper-V</span></a><br><a href="/home/leaving?allowTrusted=1&target=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fwindows-server%2Fvirtualization%2Fhyper-v%2Fsupported-ubuntu-virtual-machines-on-hyper-v">https://docs.microsoft.com/en-us/windows-server/virtualization/hyper-v/supported-ubuntu-virtual-machines-on-hyper-v</a></p> </article> </main>