I found a pattern, all apps that says “Built for Windows 10” I am not able to install with my main user account, but all other apps I am able to install and update.
weird, it works to install all apps with the new user account. Thanks for the suggestion, now I can at least use some more apps I needed, even though I would like to install/update them on my main account.
Have you tried system restore?
I have the exact same problem, haven’t been able to install or update 95% of all my apps because of this error code. I’ve had windows 10 since august and I’ve had this problem in around 1 month now (It started with the Mail & Calendar app when it needed an update last month or so)
Windows 10 mail app sucks. Use Thunderbird; you’ll have all the mails back. http://appuals.com/add-account-thunderbird/
What is the final screen you can get to when you start up?
Thank you for letting me know that it has worked.
After pouring over articles and forums last night for about 4 hrs I attempted this fix this morning. It was the only one that worked for me on a fresh Windows 7 Ultimate 64 install on a new SSD. Thank you!