[MSIX] "Restart as user" fails when PT is running as admin

[enricogior]

This applies to the current master and to PT is it's installed using the MSIX package.
By default PT runs non-elevated. If the user is an admin, PT can be executed with elevated privileges. In that case there is an option to restart PT non-elevated (aka "Run as user").
The command fails to restart PT. In some cases it does restart PT but the Settings are not accessible.

[yuyoyuppe]

The current way of dropping privileges doesn't work in MSIX context - we need to use CreateProcessAsUserW/CreateProcessWithTokenW. After initial research, it looks like these functions don't work correctly in a packaged context either. It may be possible to make them work in a packaged context, but it will take some time to research what exactly is wrong there.

There's also another possible way to workaround this: launch a UWP background task, which in turn will launch a URI with a custom schema, which will be "handled" by a new non-elevated instance of PT. It's a bit ugly workaround imo.

Since it's much more important to be able to restart elevated than vise versa, I'd suggest we simply hide the "Restart as a user" button in an elevated context.

[enricogior]

Since it's much more important to be able to restart elevated than vise versa, I'd suggest we simply hide the "Restart as a user" button in an elevated context.

We can always reconsider it for 0.16, but for 0.15 seems the best solution.
We have the fix ready for it.

[enricogior]

This has been resolved disabling the feature. We will open a new issue to track bringing back the feature in a upcoming milestone.

[enricogior]

Fix available in 0.15.0 https://github.com/microsoft/PowerToys/releases