Ystem Restore can undo recent changes to the system, without affecting your personal files. Windows 8.1 RT like many other mobile device won't allow you to install 'untrusted' apps even those from the windows 8 app store. If not, you can go back to step 1 to either undo the restore process, or try another date. Press Image+R to show the Run box, type RSTRUI and click OK.Ĭhoose a date when the computer was working correctly, and click Next to restore the system files from that date.Ĭheck to see if the problem is fixed. I have tried to uninstall every single Windows update on the machine and then install via DISM, but that didn’t help either.

I’ve tried both via DISM, Programs and Features and via full install setup. Waiting more than a week or two means the good backups can be too outdated to use. Patrik: I have three Surface Pro 3 with Windows Pro 8.1 that have the same issue.NET Framework 3.5 will not install. This works best if you use it immediately after a problem shows up. When you arenâ€™t sure where to go, this is by far the safest, fastest, and easiest option to try first. It only takes a couple of minutes, and you can undo the process or try another date if it doesnâ€™t fix the problem on the first try. This restores backups of your registry and system settings, but doesnâ€™t touch any of your files. If the problem just began recently, you can restore Windows back to an earlier time, called a restore point.

Windows 8 won t install