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This morning I started a new UWP project to test something. This is a very simple project. I have a textbox, button and textblock. That's it. I've added MVVMLight to it. I built it next. That worked fine. Then I've tried to debug it. That's where it hangs, for 15 minutes and more with this message in VS 2019's Output window:
"Creating a new clean layout...
Copying files: Total 7 mb to layout...
Checking whether required frameworks are installed...
Framework: Microsoft.NET.CoreFramework.Debug.2.2/X86, app package version 2.2.28529.0 is not currently installed.
Installing missing frameworks..."
Clearly installing Microsoft.NET.CoreFramework.Debug.2.2/X86 is hanging. What's the issue? Why is it doing this?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(73.60000000000001, 61%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EFW%3C/text%3E%3C/svg%3E)
When you package the app, it will contain all dependencies that your app requires to be installed on the target machine, including the Microsoft.NET.CoreFramework.Debug.2.2. How did you debug your app? Do you mean when you directly run it, it will hang on? If you don't add MVVMLight and do the same behavior, will the same issue occur?
At this point I'm not trying to package the app. I pressed the F5 key in Visual Studio to debug it, then it hung. I couldn't debug it at all.
I added textbox and button, then installed the MVVMLight to my project. When I pressed the F5 key to run it, it didn't hang on and worked well. What is your system version? And can you provide a simple sample that can be reproduced for us to test?
My system version is Windows 10 Pro, version 1903. OS build 18362.720.
I tried to upload a .zip file of my VS solution, but I can't upload .zip files to this website.
Well, now it works. So, this is a non-issue at this moment.
Great, glad you solved it. You can post an answer and mark it yourself to help others with the same problem.
I am not sure what happened, but the problem seems to have resolved itself. I can debug the app.