XamlCTask fails when building your Xamarin.Forms project
One error that comes up during the building process of a Xamarin.Forms project is this one:
The “XamlCTask” task failed unexpectedly
This post shows you how I fixed this error and got my project going. Googling around showed me that many people have been boxing with this problem since 2015:
- https://forums.xamarin.com/discussion/54790/the-xamlctask-task-failed-unexpectedly
- https://stackoverflow.com/questions/39975859/the-xamlctask-task-failed-unexpectedly-in-xamarin
They indicate that wrongfully setup Xaml pages and moving stuff into different namespaces might be the case. But in my case I didn’t change those things.
If you’re sure that you haven’t been refactoring namespaces or Xaml pages, then chances are that you need to do the following:
- Go to Packages > Xamarin.Forms
- Right click “Remove Packages > Add Packages…
- Reïnstall Xamarin.Forms
- Try building your project again
When the template you are using from the clean download of Visual Studio for Mac are too far behind the forms package libraries they get out of sync and you get the stated error.
Hope this helps you smoothen this one out a little faster.
Let me know in the comments below if this worked for you or if you experienced a similar problem
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XAMLC exception using Latin-1 characters #4848
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Xamarin: The "XamlCTask" task failed unexpectedly. The process cant access the file exception. Hot Network Questions Valid reason for not having plate armor in early medieval, low-magic fantasy setting? Are Feroli (italy) and Olimp (Greece) legitimate brands of extra virgin olive oil? "They don't speak it so much my side of the park." ...
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Sign in . Description System : WIN10 Professional 19042.1415 Visual studio Version : 17.1.0 Preview 4.0 SDK: net6.0-windows10.0.19041 If the above code is removed, the bug will disappear. Steps to Reproduce 1.run the 'windows machine' 2.Run the fo...
MSB4018: The "XamlCTask" task failed unexpectedly while upgrading Xam.forms 3.5.0.129452 #5260. Closed softsan opened this issue Feb 14, 2019 · 13 comments Closed MSB4018: The "XamlCTask" task failed unexpectedly while upgrading Xam.forms 3.5.0.129452 #5260.
This issue has been moved from a ticket on Developer Community. VS2019 latest version crashes the XamlCTask when defining somewhere in a XAML file the following glyph icon within a Xamarin.Froms 4.1 App.xaml file: <FontImageSource x:Key=...
'The "XamlCTask" task failed unexpectedly.System.ArgumentException: An item with the same key has already been added.Server stack trace:' In this code--And sorry for this image...i really do not know why always this editor delete some of my code as i enter it in pair of single quotes. I think Xamarin.forms have to improve their Forums ...
If you're sure that you haven't been refactoring namespaces or Xaml pages, then chances are that you need to do the following: Go to Packages > Xamarin.Forms. Right click "Remove Packages > Add Packages…. Reïnstall Xamarin.Forms. Try building your project again. When the template you are using from the clean download of Visual Studio ...
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Xamarin: The "XamlCTask" task failed unexpectedly. The process cant access the file exception
[BUG] MSB4018 The "XamlCTask" task failed unexpectedly. #6171. Closed davidbuckleyni opened this issue May 11, 2019 · 3 comments Closed [BUG] MSB4018 The "XamlCTask" task failed unexpectedly. #6171. davidbuckleyni opened this issue May 11, 2019 · 3 comments Labels.
And you can try to repair your visual studio first. For more, check Repair Visual Studio. @JessieZhang-MSFT No, the emulator can't even start. I'll try and repair visual studio but I already uninstalled and installed it. You can try to delete the emulator and try to create a new one, then try again.
The "XamlCTask" task failed unexpectedly. System.Runtime.Serialization.SerializationException: Type 'Xamarin.Forms.Xaml.XamlParseException' in Assembly 'Xamarin.Forms ...
Xamarin - The "XamlXTask" task failed unexpectedlyHelpful? Please use the *Thanks* button above! Or, thank me via Patreon: https://www.patreon.com/roelvandep...
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I'm not sure if this is a bug or I did something wrong, it's my first time using .Net MAUI, or any XAML UI for that matter. Edit: It does work when the application is already running and I add the degrees symbol, but restarting makes it crash again. HTML and XAML etc. you generally need to use encoded characters rather than the character itself.
The "XamlCTask" task failed unexpectedly in Xamarin. 1. The "XamlCTask" task failed unexpectedly. 0. Xamarin build results in "The application has not been built" ...
The "XamlCTask" task failed unexpectedly. Archived Forums 521-540 > Xamarin.Forms. Xamarin.Forms ...
The "XamlCTask" task failed unexpectedly · Issue #69 · smstuebe/xamarin-fingerprint · GitHub. smstuebe / xamarin-fingerprint Public. Notifications. Fork 110. Star 447. Code. 55. Pull requests 3. Discussions.
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