I am receiving error 0x07EF9 for the last couple months, rendering Azure Backup useless to our company at the moment. I have tried removing the Azure backup agent, reinstalling it, and removing the cache files. The backup kept failing until I removed
one of our servers from "registered servers" in Azure backup and re-registering it. The backup ran two days successfully and then started failing again. I have seen several blogs and posts about this but no solution.
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