In an enterprise CRM project, you might run into a large number of tenants in an environment since there are multiple teams working on the project. Not all of the teams want to have the patch apply to their tenant due to many reasons… My customer asked me if there’s a way for them to apply the CRM Update Rollup to a single tenant instead of all tenants in an environment.  I am thinking there’s got to be a way since CRM Online applies the patches at the tenant level, so I reach out to my colleagues in PG and Premier and sure there’s a way to do it. Smile

By default, when you install a CRM Update Rollup, it will automatically applies the update to all of the tenants (include database updates). If you want to disable the automatic database update, please execute the following PowerShell script.

add-pssnapin Microsoft.Crm.Powershell 
$itemSetting = new-object 'System.Collections.Generic.KeyValuePair[String,Object]'("AutomaticallyInstallDatabaseUpdates",0) 
$configEntity = New-Object "Microsoft.Xrm.Sdk.Deployment.ConfigurationEntity" 
$configEntity.Attributes = New-Object "Microsoft.Xrm.Sdk.Deployment.AttributeCollection" 
Set-CrmAdvancedSetting -Entity $configEntity

After the script is executed, you may go to Deployment Manager and apply the patch to the DB at the tenant level.  Just want to clarify that you are still installing the update rollup bits to the servers, and the above script will disable the updates to the CRM databases. All tenants will get the new UR bits, there are no ways around it, but the bits are backward compatible so they will work with older database schema.

I hope this will help you in your CRM project!