Cannot uninstall or update Store apps (Error 0x80070057, along with 0x80073CF9 or 0x80073CFA)

Sorry to disappoint you, Greg, but shoveling random "solutions" into this thread is definitely not helpful. For example, not only item #1 cannot be done, its failure is the reason I'm here, i.e. it is the problem.

I've already told you that I've done #2, #3, #4, and #5.

#6, #8 and #9 are not useful because the app itself runs perfectly well.

#10 and #11 are repetitive. I've done them already.

I debated giving you the Store repair steps in the first place and thought that should be next. I also always give the full set of steps because of the number of times one was repeated and the reply is "Wow it worked when I did it again" plus as I said they are sequenced based on handling thousands of Store cases, at least a dozen a day.

So I have a sense of these cases and although admittedly confounded by the Repair Install failure, what seemed next is infection scan and Store repairs. Personally I'd wipe the drive and do a gold standard Clean Install here: http://answers.microsoft.com/en-us/windows/wiki... especially if you've not done one in a while.

I'll step back and let someone else try to help you. Good luck.

Run a full scan with Malwarebyes from https://www.malwarebytes.com/mwb-download/. In scan settings set it to check for Rootkits.

What works most in such cases is to repair the Store. One of these will often fix it:

1. Try updating Store apps: https://support.microsoft.com/en-us/help/402625...
2. Make sure you have the latest Windows 10 version 1909 in Settings > System > About and if not skip to Step 10 to install it by the most stable method which will always solve Store problems.
3. See if the fixes here help: https://www.pcworld.com/article/3053099/windows...
4. Try running the Windows Store apps Troubleshooter in Windows Settings > Update & Security > Troubleshoot.
5. Try resetting the Store cache: http://www.thewindowsclub.com/reset-windows-sto...
6. If that fails to fix the problem go to Windows Settings > Apps > Apps & Features to highlight Microsoft Store, choose Advanced Options, then Reset. After it resets, restart PC.
7. If that fails then re-register the Microsoft Store from Option Two here: Re-register Apps

If you receive error "Cannot find path 'C:\AppxManifest.xml' because it does not exist" which means the Store was uninstalled then see here:

https://social.technet.microsoft.com/Forums/win...

8. Clear the LocalCache Folder: Open Run by pressing the Windows key + R hotkey.

Copy and paste %localappdata% in Run and click OK.

Open Packages> Microsoft.WindowsStore\_8wekyb3d8bbwe > LocalCache folder.

Press the Ctrl + A hotkey to select all content within the LocalCache folder.

Press the Delete button.

9. Type services.msc in Search box, choose Run as Administrator, from Services tab ensure that Microsoft Store Install Service is checked, if not restart PC.
10. If these all fail then go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...

Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files, and also Step 16 to test a new Local Admin account because of the serious and persistent problem with corrupted accounts. Then continue with the other steps to go over your install most thoroughly.

11. If nothing else works then do a Repair Install, by installing Media Creation Tool, open tool and choose to Upgrade Now. This reinstalls Windows while keeping files, programs and most settings in place, and is also the most stable method to advance to the latest version. http://windows.microsoft.com/en-us/windows-10/m...

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.

________________________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.

I did the repair installation and, most surprisingly, it did not help.

Hi Fleet. I'm Greg, an installation specialist, 10 year Windows MVP, and Volunteer Moderator. If you will work with me I will be here to help until the issue is resolved.

1. Go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...

Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files, and also Step 16 to test a new Local Admin account. Then continue with the other steps to go over your install most thoroughly.

2. If nothing else works then do a Repair Install, by installing Media Creation Tool, open tool and choose to Upgrade Now. This reinstalls Windows while keeping files, programs and most settings in place, and is also the most stable method to advance to the latest version. http://windows.microsoft.com/en-us/windows-10/m...
3. Try the TechNet Uninstaller from Microsoft Technet: https://gallery.technet.microsoft.com/scriptcen...

Install and Load Apps, then check the list for the app to get a custom uninstall script.

I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I resolved your problem, I will keep working with you until it's resolved.

________________________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.