How to remove Azure AD Connect cloud sync

You're here because:

1. Azure AD Connect cloud sync was previously configured and needs to be removed.
2. Errors titled "Unhealthy identity synchronization notification" containing "Your identity synchronization from on-premises is unhealthy" and / or "Azure Active Directory did not register a synchronization attempt from the identity synchronization tool in the last 24 hours" are being received.

In Powershell running on a Windows system as Admin:

Install-Module MSOnline

If prompted, type "Y" for yes and press enter to continue. This will install the tools required to complete the following steps.

Connect-MsolService

Input admin account information into the Microsoft window that opens on the desktop.

(Get-MsolCompanyInformation).DirectorySynchronizationEnabled

Press enter to check the current status of on-premises syncing and verify it is enabled. If it is enabled, the result will be "True".

Set-MsolDirSyncEnabled -EnableDirSync $false"

Disables the on-premises syncing.

(Get-MsolCompanyInformation).DirectorySynchronizationEnabled

If syncing has correctly been disabled, the result will be "False".