Win2K16 Standard OS. and SQL Server 2017. Two nodes in the cluster. Node 1 is Primary and Node 2 is Secondary. Both are using for SharePoint 2019 Content Databases.
Manual Fail-over from Node 1 to Node 2 works OK in SSMS, but Manual Fail-over from Node 2 to Node 1 fails at the validation part with the following error message:
"The current WSFC cluster quorum vote configuration is not recommended for this availability group. For more information, see the following topic in SQL Server Books Online: http://go.microsoft.com/fwlink/?LinkId=224159."
At the same time Auto fail-over working fine with both nodes.
Also Auto or Manual fail-over working fine for Configuration Database servers/nodes.