Windows will try to stop you. This is expected.
This is normal for new apps: tap More info, then Run anyway.
QueueUp is new, so Windows does not recognise it yet. You will see this exact box. Here is what to press.
Windows protected your PC
Microsoft Defender SmartScreen prevented an unrecognised app from starting. Running this app might put your PC at risk.
More infoDon't run
1Click More info. It is the small underlined text on the left, not a button. This is the bit everyone misses.
Windows protected your PC
App: QueueUpAgent.exe
Publisher: Unknown publisher
Run anywayDon't run
2A Run anyway button appears. Click it. You only ever do this once.
On a new Windows 11 PC you may instead see Smart App Control. Usually you can click through it. If it refuses outright, Help has the fix.