Please see https://releases.xamarin.com/stable-release-15-3-5-with-xcode-9-support for the details about this release, including the steps to update or downgrade as needed.
This release is now available as part of Visual Studio 2017 version 15.3.5 and in the Stable updater channels for Visual Studio 2017 for Mac and Xamarin for Visual Studio 2015.
Please file a quick bug report using the "15.3 Release" new bug form if you see any suspicious behavior in these versions that you wish to report.
Comment in this forum thread if your question is not related to a suspicious behavior after download, but instead one of the following:
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Can not open the visual studio installer or the "extensions and updates" dialog anymore with this VS update.
(don't have my bugzilla account details at hand right now, sorry)
After updating VSforMac and Xcode, Xamarin.UITest cannot start simulators anymore:
Fixed by removing VS via the cleaning tool and reinstalling the whole 16Gb.
For a small piece of follow-up on this error, I ran across this myself today when updating an installation that had the (now outdated) Xcode 9 GM IDE compatibility .vsix installed. This seems to be an issue with that particular .vsix installer. I have created an internal bug for the team to request investigation of that behavior, with a recommendation that it be addressed before any similar combined .vsix installers (that download a set of other .vsix installers) are used again in the future.
@BorisSpinner thank you very much for the report. Currently, UITest issues are handled through the Test Cloud support team and are not tracked through Bugzilla. In order for us to assist in investigation of your issue, could you navigate to testcloud.xamarin.com then click the "Support" link up at the top right of the page to submit your issue? That'll get the issue to the Test Cloud team who will be able to assist further.
I hope this helps!
In case it's also helpful, a new version of the Xamarin.UITest NuGet package (version 2.1.2) was just published within the last day with fixes for running on iOS 11 simulators: https://www.nuget.org/packages/Xamarin.UITest/2.1.2.
Still having problems with release builds, this solved it for me using previous version of Xamarin Studio:
https://bugzilla.xamarin.com/show_bug.cgi?id=58264
Can you please fix this in the xcode9 branch as well?
After update,
"C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(586,3): error : The Apple iOS SDK is not installed."
Both Xcode 9 and Xamarin Studio is update and restarted, Visual studio is update and restarted as well. Still got error. Double check with SDK path "/Applications/Xcode.app" it the same one on Xamarin studio.
I fixed my problem by reinstalling Xcode. My guess is updating Xcode might mess up SDK library path.
In case using the Xamarin 15.4 Preview might be an option for you, the new Beta release from yesterday with (Xamarin.iOS 11.2) now includes the Xcode 9 compatibility changes and would (at least in theory) also include fix for Bug 58264. That Preview build is now in the last few weeks to close in on Stable.
I'm running Visual Studio Professional 2015 (Version 14.0.25420.01 Update 3) for Windows. My Xamarin Update channel is set to Stable, and that dialog indicates Xamarin 4.7.9.45 status is "Download completed. Pending to install.) But selecting the "Install" button seems to do nothing, So I'm not sure how to actually install the update. I've rebooted my PC a couple of times and also logged out and back into the Xamarin account. Any suggestions?
You might also be able to work around the problem by running the cached downloaded installer by hand, located in:
For further investigation in case that is unsuccessful, you can file a quick bug report using the "15.3 Release" new bug form. Thanks in advance!
(For quick reference, I double-checked the update behavior briefly in one local test Visual Studio 2015 environment, starting with Xamarin 4.6.3.4 for Visual Studio 2015, downloading the update, and then clicking the Install button. The installer ran as expected for that quick test, so I expect there are some specific environment details needed to hit the issue. The team can help investigate further on a bug report.)
This worked out great! Thanks for the suggestion. I'm able to build and run Android and iOS app versions.