Error codes

The app you're trying to install isn't a Microsoft-verified app

What it means

Windows is set to install apps from the Store only, so it blocks anything else you download from the web.

Common causes

• The app install setting changed to Store only
• A work or school policy
• A Windows S mode device

How to fix it

1. Open Settings > Apps > Advanced app settings > Choose where to get apps and pick a less strict option.
2. If the option is greyed out, the device is in S mode or managed: leave S mode through the Store, or ask IT.
3. Only install the app from the vendor's own site and check the signature before you run it.