the xamlctask task failed unexpectedly

Build fails

XamlCTask fails when building your Xamarin.Forms project

the xamlctask task failed unexpectedly

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

Share this:, learning mobile development: should i go native or cross-platform, the relevance of coding.

  • About EeKay
  • Getappvise.io

Subscribe to Blog

Subscribe now and become part of the latest & greatest from EeKay.

Email Address

Receive updates

Recent appic posts.

  • Choosing the Right ASP.NET Core API Approach: Minimal or Controller?
  • Connecting Mac SourceTree with your GitHub account
  • How to stop Laravel’s Valet asking for password
  • Can’t save APNS settings for Azure Notification Hub: Error updating notification hub (SubCode=40000. Failed to validate credentials with APNS)
  • How Do Mobile Apps Load Their Content?

Advertisement

Search code, repositories, users, issues, pull requests...

Provide feedback.

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly.

To see all available qualifiers, see our documentation .

  • Notifications

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement . We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

XAMLC exception using Latin-1 characters #4848

@StephaneDelcroix

jsuarezruiz commented Feb 23, 2022

@jsuarezruiz

Sorry, something went wrong.

@StephaneDelcroix

StephaneDelcroix commented Feb 23, 2022

@rmarinho

rmarinho commented Feb 23, 2022

@rmarinho

No branches or pull requests

@StephaneDelcroix

IMAGES

  1. MSB4018 The "XamlCTask" task failed unexpectedly. · Issue #4420

    the xamlctask task failed unexpectedly

  2. visual studio

    the xamlctask task failed unexpectedly

  3. build

    the xamlctask task failed unexpectedly

  4. Solución al error en .NET MAUI: Error MSB4018 The «XamlCTask» task

    the xamlctask task failed unexpectedly

  5. XamlCTask fails when building your Xamarin.Forms project

    the xamlctask task failed unexpectedly

  6. XamlCTask fails when building your Xamarin.Forms project

    the xamlctask task failed unexpectedly

COMMENTS

  1. error handling

    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." ...

  2. .NET MAUI The "XamlCTask" task failed unexpectedly when using

    Developer Community

  3. MSB4018 The "XamlCTask" task failed unexpectedly. #4420

    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...

  4. MSB4018: The "XamlCTask" task failed unexpectedly while ...

    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.

  5. MSB4018 The "XamlCTask" task failed unexpectedly

    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=...

  6. The "XamlCTask" task failed unexpectedly

    '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 ...

  7. XamlCTask fails when building your Xamarin.Forms project

    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 ...

  8. The "XamlCTask" task failed unexpectedly

    SQL Server Developer Center. Sign in. United States (English)

  9. Xamarin: The "XamlCTask" task failed unexpectedly. The process cant

    Xamarin: The "XamlCTask" task failed unexpectedly. The process cant access the file exception

  10. [BUG] MSB4018 The "XamlCTask" task failed unexpectedly. #6171

    [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.

  11. c#

    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.

  12. Xamarin.Forms. Build error · Issue #6598

    The "XamlCTask" task failed unexpectedly. System.Runtime.Serialization.SerializationException: Type 'Xamarin.Forms.Xaml.XamlParseException' in Assembly 'Xamarin.Forms ...

  13. Xamarin

    Xamarin - The "XamlXTask" task failed unexpectedlyHelpful? Please use the *Thanks* button above! Or, thank me via Patreon: https://www.patreon.com/roelvandep...

  14. The "XamlCTask" task failed unexpectedly Error

    Quick access. Forums home; Browse forums users; FAQ; Search related threads

  15. XmlException when using ° in a Label : r/dotnetMAUI

    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.

  16. xamarin.forms

    The "XamlCTask" task failed unexpectedly in Xamarin. 1. The "XamlCTask" task failed unexpectedly. 0. Xamarin build results in "The application has not been built" ...

  17. The "XamlCTask" task failed unexpectedly

    The "XamlCTask" task failed unexpectedly. Archived Forums 521-540 > Xamarin.Forms. Xamarin.Forms ...

  18. The "XamlCTask" task failed unexpectedly #69

    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.

  19. XAMLC exception using Latin-1 characters #4848

    You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window.