Category Archives: Xamarin.Mac

Alpha Preview 5: Cycle 8

We are releasing a newer Alpha preview of our next major feature release, called Cycle 8. As this is an Alpha build, there are some known issues and the possibility of new issues being found during testing.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.


Known Issues

  • [Xamarin Studio] 40422: The roslyn workspace can’t be queried while it’s loading.
  • [Xamarin.VS]42435: Getting “ResolveUniversalTypeIdentifiers” task failed unexpectedly” error, on building ‘Spritekit Game’ or ‘Scenekit Game’ Mac App solution in VS
  • [Xamarin.VS] 41608:  Deleting a zip from AppData\Local\Xamarin\zips causes all subsequent builds to fail.
  • [Xamarin.VS]40767:  Collection View and Table View are rendered differently on the iOS designer and the actual simulator.
  • [Xamarin.VS] 42997 – Visual Studio 2012 doesn’t show “Blank App (Xamarin.Forms Portable)” and “ClassLibrary (Xamarin.Forms)” templates under the Cross Platform section.
  • [Xamarin.VS / Xamarin Designer42989 – Created segue not displayed in watchOS designer correctly.
  • [Xamarin.VS / Xamarin.Android]41607: No build output when downloading to zips for support package.]
  • [Xamarin.VS / Xamarin.iOS]42978 – watchOS 1 apps will not deploy to the simulator.
  • [Xamairn.iOS]42392: ‘clang: error: unable to execute command: Segmentation fault: 11’ when compiling ios project
  • [Xamarin.iOS] 42992 – Loose debugger connection

Products Released

  • Xamarin Studio 6.1.0.5308
    • Release Notes
    • Forum Thread – Alpha Release: Cycle 8 Feature Release Preview
    • Issues Addressed:
      • 42728 – watchOS apps in Xamarin Studio should now properly deploy on device and simulator.
      • 42389 – Constant spinwheels / hangs when editing, scrolling, or searching in the document editor with a large solution using XS 6.1
      • 43013 – Cannot create a Multiplatform Single View App
  • Xamarin.VS 4.2.0.438
    • Release Notes
    • Forum Thread – Alpha Release: Cycle 8 Feature Release Preview
    • Issues Addressed:
      • 42046 – Login functionality for Xamarin.VS should now work correctly.
      • 42958 – Getting “DetectSdkLocations — FAILED” error on building Blank Mac application on Visual Studio.
      • 42435 – Getting “ResolveUniversalTypeIdentifiers” task failed unexpectedly” error, on building ‘Spritekit Game’ or ‘Scenekit Game’ Mac App solution in VS.
      • 42113 – xaml files in shared asset projects don’t work in the forms previewer
      • 43018 – Unable to select an event handler which has been already defined
      • 42598 – Getting build error on building ‘Spritekit Game’ and ‘Scenekit Game’ solution in VS.
      • 42675 – Getting error on deploying iOS application on “DEVICE + RELEASE” configuration.
  • Xamarin.Android 6.2.0.25
    • Release Notes
    • Forum Thread – Alpha Release: Cycle 8 Feature Release Preview
    • Issues Addressed:
      • 42168 –  A numeric comparison was attempted on “$(_DeviceSdkVersion)” that evaluates to “” instead of a number, in condition “$(_DeviceSdkVersion) >= 21”
      • 42521 –  Applications crashing on startup due to java.io.IOException: No original dex files found
      • 42469 – Fixed assertion “fixed_type_allocator_indexes [type] == slot’ not met”, which was causing a crash on startup.
      • 42835 – Android projects using support packages should now build properly on Windows.
      • 42830 – Android applications should now deploy properly in release configuration.
  • Mono Framework 4.6.0.127
    • Release Notes
    • Issues Addressed:
      • 41644 – Fixed a hang on shutdown.
      • 41674  MSBuild should now work correctly.

Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – Aug 2nd, 2016

Alpha 5– This Release!

Stable – Fall 2016

Preview: iOS 10 / Xcode 8 / Sierra Support Update 2

We are releasing a new set of preview builds with support for Xcode 8, iOS 10, watchOS3, tvOS 10, and MacOS Sierra. Be sure to check out the supporting documentation on all these products as well. 

NOTE – These builds have been tested against Xcode beta 3 and beta 4. 

There is no target stable date final iOS 10 support at this time, as we have to wait until Apple finalizes and publishes their support before we can release ours. That being said, we may do additional preview releases between now and the final Apple release, so be sure to check back and see if newer versions become available in the coming months.

As with all our preview releases, this is not a product we officially support. If you encounter any issues, we recommend filing a bug in Bugzilla. You can also jump into the discussions on the forum thread posted below.


Known Issues 

  • [Xamarin Studio] 42969 – XS device support does not work with simulators or devices with Xcode 8 beta 4.
    • Workaround – Device support can be enabled as noted in comment 5 of the above linked bug.
  • [Xamarin Studio] – 42568 – WatchInterface.storyboard fails to load
  • [Xamarin Studio / Xamarin.VS] 41554 – Debugging on watchOS device/simulator is not supported on these builds.
  • [Xamarin.VS]43097 – watchOS simulator support is not available on this build.
  • [Xamarin.VS]43083 – watchOS apps launch in default mode when executed in notification mode from XS or VS.
  • [Xamarin.iOS] 43102 – Crossplatform application failed to launch on iOS device due to an error ” dyld: Library not loaded: @executable_path/libxamarin-debug.dylib

Products Released

  • Xamarin Studio 6.1.0.5235 [Download]
  • Issues Addressed:
    • 41329 – You will need to  disable, then enable, the ‘Show app on apple watch’ option on iPhone to install WatchKit app on watch device.
  • Xamarin for Visual Studio 99.0.0.3298 [Download]
  • Issues Addressed:
    • 42573 – watchOS projects will not build in Visual Studio with debug device configuration
    • 42647: The Designer is not supported for Visual Studio in this preview.

Alpha Preview 4: Cycle 8

We are releasing a newer Alpha preview of our next major feature release, called Cycle 8. As this is an Alpha build, there are some known issues and the possibility of new issues being found during testing.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.


Known Issues

  • [Xamarin Studio] 40422: The roslyn workspace can’t be queried while it’s loading.
  • [Xamarin.VS]42397: The Xamarin.Forms Previewer is disabled on VS for this release.
  • [Xamarin.VS]42435: Getting “ResolveUniversalTypeIdentifiers” task failed unexpectedly” error, on building ‘Spritekit Game’ or ‘Scenekit Game’ Mac App solution in VS
  • [Xamarin.VS] 41608:  Deleting a zip from AppData\Local\Xamarin\zips causes all subsequent builds to fail.
  • [Xamarin.VS]40767:  Collection View and Table View are rendered differently on the iOS designer and the actual simulator.
  • [Xamarin.VS] 42997 – Visual Studio 2012 doesn’t show “Blank App (Xamarin.Forms Portable)” and “ClassLibrary (Xamarin.Forms)” templates under the Cross Platform section.
  • [Xamarin.VS / Xamarin Designer42989 – Created segue not displayed in watchOS designer correctly.
  • [Xamarin.VS / Xamarin.Android]41607: No build output when downloading to zips for support package.
  • [Xamarin.VS / Xamarin.iOS]42988 – Attempting to build an iOS project other than the first project loaded and built will fail.
    • Workaround – Restart VS and load the other iOS project first.
  • [Xamarin.VS / Xamarin.iOS]42978 – watchOS 1 apps will not deploy to the simulator.
  • [Xamairn.iOS]42392: ‘clang: error: unable to execute command: Segmentation fault: 11’ when compiling ios project
  • [Xamarin.iOS / Xamarin.Mac] – 42828 – Unable to build F# templates.

Products Released

  • Mono Framework 4.6.0.125
    • Release Notes
    • Issues Addressed:
      • 41644 – Fixed a hang on shutdown.
      • 41674  MSBuild should now work correctly.

Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – July 27th, 2016

Alpha 4 – This Release!

Stable – Fall 2016

Stable Release: Cycle 7 Service Release 1

We are publishing a Stable release of our second bugfix release on top of Cycle 7, called Service Release 1.

NOTE Regarding .NET Standard and NuGet Client – These builds introduce compatibility with the new .NET Standard 1.6.  This in particular allows developers to consume NuGet packages that have been built against the .NET Standard 1.6.

NOTE: Since Google’s newest Android N previews now only allow linking to NDK-provided native libraries, existing apps using e.g. Mono.Data.Sqlite.dll will crash when running on Android N. You will need to rebuild your apps with Xamarin C6SR4, or later, to ensure that this crash does not occur once the final system image for Android N is released.

NOTEVisual F# Tools 4.0 RTM must be installed in order for F# console project builds to work with Cycle 7 Xamarin Studio build noted below.

NOTE: You will need to have Microsoft Build Tools 2015 installed in order to use the iOS Designer in the beta channel, with the current Xamarin.VS build.

NOTE: The Cycle 7 version of Xamarin Studio on Windows requires both Microsoft Build Tools 2013 (or Visual Studio 2013) and Microsoft Build Tools 2015 (or Visual Studio 2015) to be installed.


Products Released 

  • Xamarin Studio 6.0.2.73
    • Release Notes
    • Forum Thread – Stable Release: Cycle 7 – Service Release 1
    • Issues Fixed:
      • 42051 – Fixed an error when editing control name in storyboard
      • 41862 – Android Designer should now correctly open in XS for certain projects
      • 41499 – Shortened time it takes for NuGet package searches to return results
      • 42743 – HttpClientHandler combo is not shown for Community license
      • 42795 – View >> Focus Document is not functioning
  • Xamarin.Android 6.1.2.21

Upcoming Release Dates

Beta – July 6th, 2016

Beta 2 – July 20th, 2016

Beta 3 – July 26th, 2016

Beta 4 – July 29th, 2016

Stable – This Release!

Beta Release: Cycle 7 Service Release 1 (update 3)

We are publishing a newer preview of our second bugfix release on top of Cycle 7, called Service Release 1. As this is a Beta build, there may be some known issues and the possibility of new issues being found during testing.

NOTE Regarding .NET Standard and NuGet Client – These builds introduce compatibility with the new .NET Standard 1.6.  This in particular allows developers to consume NuGet packages that have been built against the .NET Standard 1.6.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.

NOTE: Since Google’s newest Android N previews now only allow linking to NDK-provided native libraries, existing apps using e.g. Mono.Data.Sqlite.dll will crash when running on Android N. You will need to rebuild your apps with Xamarin C6SR4, or later, to ensure that this crash does not occur once the final system image for Android N is released.

NOTEVisual F# Tools 4.0 RTM must be installed in order for F# console project builds to work with Cycle 7 Xamarin Studio build noted below.

NOTE: You will need to have Microsoft Build Tools 2015 installed in order to use the iOS Designer in the beta channel, with the current Xamarin.VS build.

NOTE: The Cycle 7 version of Xamarin Studio on Windows requires both Microsoft Build Tools 2013 (or Visual Studio 2013) and Microsoft Build Tools 2015 (or Visual Studio 2015) to be installed.


Products Released 

  • Xamarin Studio 6.0.2.73
    • Release Notes
    • Forum Thread – Beta Release: Cycle 7 – Service Release 1
    • Issues Fixed:
      • 42051 – Fixed an error when editing control name in storyboard
      • 41862 – Android Designer should now correctly open in XS for certain projects
      • 41499 – Shortened time it takes for NuGet package searches to return results
      • 42743 – HttpClientHandler combo is not shown for Community license
      • 42795 – View >> Focus Document is not functioning
  • Xamarin.Android 6.1.2.21

Upcoming Release Dates

Beta – July 6th, 2016

Beta 2 – July 20th, 2016

Beta 3 – July 26th, 2016

Beta 4 – This Release!

Stable – July 2016

Alpha Preview 3: Cycle 8

We are releasing a newer Alpha preview of our next major feature release, called Cycle 8. As this is an Alpha build, there are some known issues and the possibility of new issues being found during testing.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.


Known Issues

  • [Xamarin Studio] 40422: The roslyn workspace can’t be queried while it’s loading.
  • [Xamarin.VS]42397: The Xamarin.Forms Previewer is disabled on VS for this release.
  • [Xamarin.VS]42435: Getting “ResolveUniversalTypeIdentifiers” task failed unexpectedly” error, on building ‘Spritekit Game’ or ‘Scenekit Game’ Mac App solution in VS
  • [Xamarin.VS] 41608:  Deleting a zip from AppData\Local\Xamarin\zips causes all subsequent builds to fail.
  • [Xamarin.VS]40767:  Collection View and Table View are rendered differently on the iOS designer and the actual simulator.
  • [Xamarin.VS] 42046User is not able to login in XVS.
  • [Xamarin.VS / Xamarin.Android]41607: No build output when downloading to zips for support package.
  • [Xamairn.iOS]42392: ‘clang: error: unable to execute command: Segmentation fault: 11’ when compiling ios project
  • [Xamarin.Android]42835Android projects which use Support packages are failing to build on Windows due issue extracting resources
  • [Xamarin.Android]42469:  Apps may crash on startup with the assertion “fixed_type_allocator_indexs[type]==slot’ not met”.
  • [Mono Runtime] 41644: Shutdown deadlock for mono 4.5.1/master with Xamarin Studio

Products Released


Upcoming Release Dates

Alpha – April 27th, 2016 (Evolve Conference)

Alpha 2 – July 13th, 2016

Alpha 3 – This Release!

Stable – Fall 2016

Beta Release: Cycle 7 Service Release 1 (update 2)

We are publishing a newer preview of our second bugfix release on top of Cycle 7, called Service Release 1. As this is a Beta build, there may be some known issues and the possibility of new issues being found during testing.

NOTE Regarding .NET Standard and NuGet Client – These builds introduce compatibility with the new .NET Standard 1.6.  This in particular allows developers to consume NuGet packages that have been built against the .NET Standard 1.6.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.

NOTE: Since Google’s newest Android N previews now only allow linking to NDK-provided native libraries, existing apps using e.g. Mono.Data.Sqlite.dll will crash when running on Android N. You will need to rebuild your apps with Xamarin C6SR4, or later, to ensure that this crash does not occur once the final system image for Android N is released.

NOTEVisual F# Tools 4.0 RTM must be installed in order for F# console project builds to work with Cycle 7 Xamarin Studio build noted below.

NOTE: You will need to have Microsoft Build Tools 2015 installed in order to use the iOS Designer in the beta channel, with the current Xamarin.VS build.

NOTE: The Cycle 7 version of Xamarin Studio on Windows requires both Microsoft Build Tools 2013 (or Visual Studio 2013) and Microsoft Build Tools 2015 (or Visual Studio 2015) to be installed.


Known Issues

  • [Xamarin.Android / 42168] – Error thrown when attempting to deploy a test app from Visual Studio to Android.

Products Released 


Upcoming Release Dates

Beta – July 6th, 2016

Beta 2 – July 20th, 2016

Beta 3 – This Release!

Stable – July 2016

Beta Release: Cycle 7 Service Release 1 (updated)

We are publishing a newer preview of our second bugfix release on top of Cycle 7, called Service Release 1. As this is a Beta build, there may be some known issues and the possibility of new issues being found during testing.

NOTE Regarding .NET Standard and NuGet Client – These builds introduce compatibility with the new .NET Standard 1.6.  This in particular allows developers to consume NuGet packages that have been built against the .NET Standard 1.6.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.

NOTE: Since Google’s newest Android N previews now only allow linking to NDK-provided native libraries, existing apps using e.g. Mono.Data.Sqlite.dll will crash when running on Android N. You will need to rebuild your apps with Xamarin C6SR4, or later, to ensure that this crash does not occur once the final system image for Android N is released.

NOTEVisual F# Tools 4.0 RTM must be installed in order for F# console project builds to work with Cycle 7 Xamarin Studio build noted below.

NOTE: You will need to have Microsoft Build Tools 2015 installed in order to use the iOS Designer in the beta channel, with the current Xamarin.VS build.

NOTE: The Cycle 7 version of Xamarin Studio on Windows requires both Microsoft Build Tools 2013 (or Visual Studio 2013) and Microsoft Build Tools 2015 (or Visual Studio 2015) to be installed.


Known Issues

  • [Xamarin.Android / 42168] – Error thrown when attempting to deploy a test app from Visual Studio to Android.
  • [Xamarin.Mac] – Some Xamarin.Mac Unified Mobile applications may fail linking with errors related to System.Security.dll. This can be worked around by disabling linking or downgrading to SR0. This will be fix in a future update.

Products Released 


Upcoming Release Dates

Beta – July 6th, 2016

Beta 2 – This Release!

Stable – July 2016

Preview: iOS 10 / Xcode 8 / Sierra Support

We are releasing a set of preview builds with support for Xcode 8, iOS 10, watchOS3, tvOS 10, and MacOS Sierra. Be sure to check out the supporting documentation on all these products as well. 

NOTE – These builds have been tested against Xcode beta 2. It has compatibility with Xcode beta 3, however we are still testing against beta 3 to find any issues that may exist.

There is no target stable date final iOS 10 support at this time, as we have to wait until Apple finalizes and publishes their support before we can release ours. That being said, we will do additional preview releases between now and the final Apple release, so be sure to check back and see if newer versions become available in the coming months.

As with all our preview releases, this is not a product we officially support. If you encounter any issues, we recommend filing a bug in Bugzilla. You can also jump into the discussions on the forum thread posted below.


Known Issues 

  • [Xamarin.iOS/Xamarin.VS] 42647: The Designer is not supported for Visual Studio in this preview.
  • [Xamarin.iOS/Xamarin.VS] 42573: watchOS projects will not build in Visual Studio with debug device configuration
  • [Xamarin Studio] 42568: WatchInterface.storyboard fails to load.
  • [Xamarin.iOS]41329: You will need to  disable, then enable, the ‘Show app on apple watch’ option on iPhone to install WatchKit app on watch device.

Products Released

  • Xamarin for Visual Studio 99.0.0.2978 [Download]

Beta Release: Cycle 7 Service Release 1

We are publishing a preview of our second bugfix release on top of Cycle 7, called Service Release 1. As this is a Beta build, there may be some known issues and the possibility of new issues being found during testing.

Please check out the product release notes to see all the fixes and known issues for this preview, and use the below forum threads to report and monitor issues that may occur, as well as find any potential workarounds that may exist.

NOTE: Since Google’s newest Android N previews now only allow linking to NDK-provided native libraries, existing apps using e.g. Mono.Data.Sqlite.dll will crash when running on Android N. You will need to rebuild your apps with Xamarin C6SR4, or later, to ensure that this crash does not occur once the final system image for Android N is released.

NOTEVisual F# Tools 4.0 RTM must be installed in order for F# console project builds to work with Cycle 7 Xamarin Studio build noted below.

NOTE: You will need to have Microsoft Build Tools 2015 installed in order to use the iOS Designer in the beta channel, with the current Xamarin.VS build.

NOTE: The Cycle 7 version of Xamarin Studio on Windows requires both Microsoft Build Tools 2013 (or Visual Studio 2013) and Microsoft Build Tools 2015 (or Visual Studio 2015) to be installed.


Known Issues

  • [Xamarin.iOS / 41836] – Breakpoints in ‘async’ methods in PCL projects are not hit if the linger is enabled when debugging on iOS projects.
  • [Xamarin.Android / 42168] – Error thrown when attempting to deploy a test app from Visual Studio to Android.

Products Released 


Upcoming Release Dates

Beta – This Release!

Stable – July 2016