Failed to load package MonoAndroidDesignerPackage

from : https://developercommunity.visualstudio.com/content/problem/160124/failed-to-load-package-monoandroiddesignerpackage.html

Solution by  avatar image  Erick J. Gonzalez · 2017年12月11日 19:00

I have the same problem here. The error occurs in VS 2017 15.5.1 as soon as I open VS and click the Toolbox. I have re-installed Xamarin using the VS Installer with no success.

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avatar imageVictor Garcia Aprea [MSFT] · 2017年12月11日 19:13 0

Hi @Erick J. Gonzalez, please don't reinstall VS, that won't help. Follow this:

1) Start VS

2) File->New->Project->Xamarin app (either iOS or Android)

3) Now click the Toolbox

4) Close VS

At this point, VS would have its toolbox cache properly created (in step #3 above) after Xamarin was properly loaded (in step #2). You only need to do this once.

Please let me know if this works for you.

thanks,

-VGA.

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