I received an e-mail that a sync hasn't been done in 24 hours.
If I run Azure AD Connect, I get the following error:
Synchronization is currently in progress. Azure Active Directory Connect cannot proceed further as configuration changes cannot be made at this time.
If I try running a sync through powershell I also get an error.
Start-ADSyncSyncCycle -PolicyType Delta
Start-ADSyncSyncCycle : System.InvalidOperationException: Sync is already running. Cannot start a new run till this one completes.
If I try to disable the sync scheduler:
Set-ADSyncScheduler -SyncCycleEnabled $false
Set-ADSyncScheduler : System.InvalidOperationException: Scheduler::RequestCurrentRunToStop : Current run of scheduler has already being cancelled.
How can I solve this mess?