Bug 60278 - Xamarin 4.7.10.22 causes Catastrophic Failure when double click on xaml file in VS2015 solution explorer
Summary: Xamarin 4.7.10.22 causes Catastrophic Failure when double click on xaml file ...
Status: VERIFIED FIXED
Alias: None
Product: Visual Studio Extensions
Classification: Xamarin
Component: General ()
Version: 4.7.0 (15.4)
Hardware: PC Windows
: --- major
Target Milestone: 15.5
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2017-10-19 19:35 UTC by jjacobsen@lehighdim.com
Modified: 2017-11-13 11:23 UTC (History)
7 users (show)

Tags:
Is this bug a regression?: Yes
Last known good build: 4.7.9.45

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Status:
VERIFIED FIXED

Description jjacobsen@lehighdim.com 2017-10-19 19:35:49 UTC
I had Xamarin 4.5.0.443 and updated it to 4.7.10.22.  Now, double-clicking on an xaml file causes 'catastrophic failure (exception from HRESULT...E_UNEXPECTED...'.  I have rebooted since the update.  The VS2015 Forms solution was fine before the update.  I can rt-click the file and open it with the default editor ok.  After that, I can double-click xaml files and they open ok.  All is well until I close all the xaml files, close the solution, then open the solution.  Please fix this.
Comment 1 gremlin80 2017-10-23 21:09:29 UTC
problem is related to the 'editor extension' used by Visual Studio to edit the file. It does happen on VS2015/2017 on windows 7 or windows 10 machines.

It does prevent to edit xaml files with proper support.
Comment 2 Jimmy [MSFT] 2017-10-23 21:16:59 UTC
I am able to reproduce this only on VS2015. If you are also seeing this on VS2017 can you share a sample project so we can take a look?


### Steps to Reproduce 
1. In VS2015, create a new MasterDetail Xamarin.Forms project
2. Open one of the XAML pages in the "Views" folder


### Expected Results
The file is opened


### Actual Results
Error window appears with

> Catastrophic failure (Exception from HRESULT: 0x8000FFFF) (E_UNEXPECTED))


### Workaround
Right click the file and select "Open With.." > "Automatic Editor Selector (XML)"