Windows 10: UWP apps not working

Hello,

I am using a Surface Pro (2017) on the slow ring of Windows Insider. Over the couple last weeks, performance was so slow it began making the machine useless. I did a backup of all my files and decided to do a fresh install of Windows.

To my surprise however, I was unable to start **any** UWP app (edge, calculator, windows defender, etc); likewise I am unable to execute any of the posts I've seen online as I eventually get an error related to Windows Firewall being unable to start. I tried resetting the system once again with no luck

Have you had any similar issues? And if so, how did you fix them? Thanks a lot in advance, I am really stressed out as I am unable to do any work. Thanks a lot in advance.

Pd: I am currently on 20170 and am unable to upgrade to the October 2020 Update (stable) or any subsequent insider builds.

submitted by /u/edvilme
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:)

 

Working around the Network Loopback Isolation of UWP Apps

I've been hitting a blockage trying to get my UWP App to receive data from a local UDP port in the following scenario:

• Windows 10 | Version 10.0.16299 Build 16299
  
• UWP target and minimum Version 10.0.16299
  
• Declared capabilities :
  
  • Internet (Client & Server)
    
  • Internet (Client)
    
• UdpClient listening on 127.0.0.1:1234
  
• Tested on two different systems in different networks with the same resulting behaviour
  

I am aware of the CheckNetIsolation tool and already tried the following steps multiple times:

• Ensuring that the App is registered while running with CheckNetIsolation loopbackexempt -s
  
• Clearing all exemptions with CheckNetIsolation loopbackexempt -c and manually adding the App with CheckNetIsolation loopbackexempt -a -n=*Package Family Name*
  
• Running the App while all restrictions are cleared with CheckNetIsolation loopbackexempt -c
  

I am running my App from Visual Studio, awaiting for UdpClient.ReceiveAsync() to return something in a while loop.

My code works fine when i use it from a .Net Framework 4.7.2 Console App, so i can exclude any errors interfering on that end.

The only thing that lets me receive data in my UWP App is running CheckNetIsolation loopbackexempt -is -n=*Package Family Name*. As soon as i stop it from running, my UDP client stops receiving aata.

Sadly, the solution i found and other tools that redirect communication so that they appear to be sent by another source are not possible due to different contraints.

 

UWP app live tiles not working

I did what you suggested, but after a while the tiles went to solid colors again.

 

Certain apps are crashing upon start. App reset, re-installation nothing seems to help. Any fixes?

The app in question are as follows:

• Engadget UWP
• Windows Central UWP
• CNET (Windows 8 App)

These were working fine in AU.

I have tried App reset and re-installation from store. Nothing seems to help.

Any suggestions?