Windows 10: Missing letters and UI in some pages in Firefox on build 1909 ?

This is the first time I've ever seen this and it's happened a few times today already. Pages like Facebook and some other sites lack whole words or even UI (Facebook has no top side blue bar where search etc. are). Is this a Firefox thing or a Windows bug ?

submitted by /u/Deranox
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:)

 

Completely missing Dot Net in Windows 10 -1909?

.NET Framework is built-into Windows 10 version 1903 and Windows 10 version 1909. It is not possible for at least this version of the .NET Framework to be installed.

The error you have received, is likely due to the fact the application you are attempting to use, is specifically trying to target a version of the .NET Framework you don't have installed. I suggest using official Microsoft tool to download a Windows 10 version 1909 ISO. You can use the Media Creation Tool and/or the Upgrade Assistant. Windows ISO Downloader was only recently updated to support .NET Framework 4.8 on November 8th 2019. If you were not using Version 8.22, and would like to still use the tool, you need to download that version.

RaymondCC .NET Detector looks at registry keys that are created when you install .NET Framework. It does not support the .NET Framework version that are included with Windows 8.0+

The built-in version of the .NET Framework for Windows 10 version 1903 was .NET Framework 4.8

.NET Framework 4.5+ has never been located in the list of Windows Features for any version of Windows. The lack of .NET Framework 3.5 is likely due to your WinSxS directory not containing it.

You can install .NET Framework 3.5 if you run the same command you ran, but provide a source, to the components you need.

This is due to the fact the .Net Framework 4.8 is already installed on Windows 10 version 1903 and Windows 10 version 1909. .NET Framework 4.8 is an in-place upgrade to .NET Framework 4.5

This normally only happens when you have moved vital folders like the user's profile to a non-standard location.

Your inability to install .NET Framework 3.5 is extremely easy to fix and likely the reason your unable to run the third-party application. Perform the following steps to solve that problem.

1. Download a Windows 10 version 1909 ISO
   
2. Mount the ISO within Windows 10
   
3. Run the following command, the command assumes, the drive letter assigned to the virtual mount is D:
   
   • DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:d:\sources\sxs
     

Source: Deploy .NET Framework 3.5 by using Deployment Image Servicing and Management (DISM)

 

Missing Firefox shortcut from All Apps menu

Hi,

Welcome to Microsoft Community.

• 
  Press Windows + R keys to open run window
  
• 
  Type Firefox to launch firefox
  

If it launches, you may try to create a shortcut of it by following the steps below:

• 
  Windows + E keys to open Windows explorer
  
• 
  Select this pc and select C: drive
  
• 
  Open Program files and right click on firefox and click on Shortcut on desktop.
  

Regards,

 

FireFox

That's why I suggested this for starters, for the issue you report:

Firefox - Profile in Use

Scroll down on that page to the "Solutions" section.
The easiest way is to open the Windows Task Manager and to kill the Firefox process from there.
If that does not work, then proceed to the next steps in that tutorial: remove the "profile lock" file, etc.

Please let us know how that goes.

Thanks,
MM