Windows Store (UWP) games currently require extra permissions to be able to capture. If OBS is installed in the default (C:\Program Files (x86)) directory, these will be applied automatically. If you installed OBS to a custom location, you will need to add the ALL APPLICATION PACKAGES security group to the obs-studio folder. Follow these steps:
- Close OBS if it is already open
- Right click on the obs-studio program folder, select properties, then click on the Security tab.
- Under the Groups or user names section, click on Edit...
- Click add, then type in ALL APPLICATION PACKAGES. Select Check Names and it should underline to show it was typed.
- Click OK, then Apply, then OK, and finally OK again.
- Restart OBS and attempt to capture the game again