I then built a CRM 2016 server at 18.104.22.168 which created a new organisation also at that level. I installed 22.214.171.1249 to bring it up to the level that should allow the problem to be resolved as per the above linke. The new organisation upgraded to 126.96.36.1999. The two original organisations fail with the following error:
09:54:27| Error| Exception occured during Microsoft.Crm.Tools.Admin.OrganizationDatabaseHotFixer: Error.ActionFailed Microsoft.Crm.Tools.Admin.InstallDatabaseUpdatesAction
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. —> Microsoft.Crm.CrmException: Updating Category.title.hasmultiplelabels but it’s not valid for update. New value:False. Original value:True. MUI aware attribute cannot be updated once it is set as true.
I can’t find anything on this error. dbo.Category has one line and every value is set to NULL. There is no property for the column title that matches “hasmultiplelabels” or even refers to labels.