Beta Release: 15.3 Preview 4

We are releasing the fourth preview of our next major release, called 15.3. This release is our stable release candidate and includes our next preview of Visual Studio for Mac.

Note that this Beta version is a smaller release compared to the current Alpha preview. In particular, it does not include the Xamarin Live Player, Docker, Azure Functions, or Xamarin IoT preview features announced at Build. Please stay on the Alpha channel if you wish to continue to preview those features.

As this is a Beta build, there are some known issues and the possibility of new issues being found during testing. Of course, additional bug reports are still welcome for these preview versions. If you see any suspicious behavior that you wish to report, please file a quick bug.

If you notice an error in this blog post or have trouble downloading one of the installer packages, please let us know in the corresponding forum thread.

Please check out the product release notes to see all the fixes and known issues for this release.


Highlighted Known Issues

  • [Xamarin.VisualStudio] – “Unable to copy file “obj\Debug\App1.dll” to “bin\Debug\App1.dll”. The process cannot access the file ‘bin\Debug\App1.dll’ because it is being used by another process.” and “Exceeded retry count of 10. Failed”.
    • This issue originally appeared in the Xamarin 15.2 release and was fixed in the Xamarin 15.2.2 release. Unfortunately, the fix was accidentally omitted from these Xamarin 15.3 release preview builds. It will be included in the next published set of builds.

Products Released


Installing the Beta and switching back to Stable

You can install this new Beta version or switch back to the current Stable version by changing updater channels.


15.3 Release Dates

Preview 1 – May 11th, 2017

Preview 2 – June 16th 2017

Preview 3 – June 29th 2017

Preview 4 – This Release!