We had a network failure (due to an HP Virtual Connect installed in a C3000) that resulted in a full cluster failure (lost all networks). After resolving the issue by re-seating both VCs we managed to bring the cluster and the VMs back on-line. When doing
checks we noticed that not a single service account was able to start. All service accounts were reporting "logon failure". We looked up the current password and re-entered it into the service configuration - the service started correctly. We had
to do this for every service on every server that was hosted on the Hyper-V - SQL, Exchange, Sharepoint, Backup Exec, etc. The same goes for all Backup Exec logon accounts saved in the application. All backups failed because they couldn't login. I have never
seen a failure such as this and I can't really figure out what happened except that some "cached credential" was deleted/corrupted because the VMs lost access to their storage. Ideas? Thank you in advance.
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