Our Sync server suddenly stopped working a couple of days ago, so we decided to upgrade the AADConnect software. This didn't solve the issue, so I (stupidly, I know) changed the password of the on-premise account created by AADConnect, along with the password
of the account created in Office 365. Understandably, this further destroyed the sync server. I've uninstalled AADConnect, and when trying to re-install, it fails at the installation giving the event ID's 0 and 906 respectively. Event ID 0 says that
communication object System.ServiceModel.ServiceHost cannot be used for communication because it is in the Faulted state, and event 906 says Cannot listen on pipe name 'net.pipe://localhost/' because another pipe endpoint is already listening on that name.
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