Just a reminder – for those who do encounter any issues in the upgrade process from Beta 3 Refresh to RC, you can use the Visual Studio Team Foundation Server Setup & Administration Forum to seek assistance. It’s also where you’ll find the Upgrade Troubleshooting Guide.
Since many configuration changes are made during the upgrade process, there is a possibility that you may hit an error that is very unique to your system. Keeping this in mind the upgrade utility is designed to be re-runnable. If you hit an error, there is always the option of manually fixing it and re-running the utility.
We are actively monitoring the issues and will be posting updates to the tool frequently. We will post a notification here whenever there is an update to the tool.