Windows 10: How do I change the default app install location without deleting my apps from other device

Hello, I'd like to install some games onto an external hard drive that I switch between 2 computers but because of poor design thanks, Microsoft I get errors whenever I try and the only option is to switch the default app install location to my external hard drive. Remember how I said I switched between 2 computers? Yeah, whenever I go to switch the default app install location it tells me that there are apps on my hard drive from another device and they need to be deleted to continue. How do I switch my default app install location without deleting my apps from the other computer? This woul

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Changing default app location.

I have Game Pass and want to install a few games, however, when I choose to change the default app location in Windows it mentions it will have to remove existing apps on the other drive.

C: Is my OS Drive and has all my game modifications on it, D: However is for Steam and other games.

What exactly will I lose by changing the default location, as it mentions that?

Winver: Version 20H2 (OS Build 19042.804)

 

How to change default app for file type

'Open With > Choose another app' has three step, in the first it only offers apps registered for that file type. If you click 'More apps' it lists all registered apps regardless of suitability. Both these steps have the tick-box for 'Always use...' in my 18363.752. The third step, if needed, is 'Look for another app on this PC'. The 'Always use...' must be ticked before taking this step if you want the change to stick. However, WMP appears at the second step.

For a quick look at a JPG almost anything (including WMP) is more practical than Photos which on my system takes more than ten seconds just to open a photo. The OP is probably not aware that the Windows Photo Viewer is still available in W10, but hidden away. That's my default viewer for JPG.


Restore Windows Photo Viewer in Windows 10

And, once enabled, is available in Settings > Apps > Default apps.

 

Changing default app location.

Because my issue isn't about Steam, it's about Game Pass.

I simply want to change the default app location to install Game Pass games, I just need to know what exactly will be removed if I change it.