Windows 10 Store App Error 0x80070781

Anytime I try to download a theme from the Windows 10 App store I get an error "something happened" error 0x80070781 and all I can do is press the OK option. I tried to the wsreset.exe and some other options that involve powershell scripts, however, these end up generating an error stating that the Windows store app needs to be closed. Here is the example of the script I tried with no success:

Get-AppXPackage *WindowsStore* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"} 

I've read somewhere that the one possible solution is to copy a working version of the WindowsApps Folder to my machine? Is this correct?

There are several reasons for this error. It maybe caused by account itself, update or Windows store APP.

1. You can try to change an account to login and download.
2. Check if update is normal, disable the firewall and anti-virus software.
3. Run the windows APP troubleshooter and help you detect the problem with the store APP.
4. Reinstall the windows 10 store APP.