Uninstall quarantined program?

My partner is unable to uninstall Opera Beta from her computer.

Whilst investigating we found that Opera Beta is in her Avast quarantine.

How can we uninstall from the computer? Tried deleting from quarantine but still unable to uninstall from Add / remove programs in control panel.

you should have restored from quarantine

see here https://forum.avast.com/index.php?topic=53253.0
scroll down to second picture Farbar Recovery Scan Tool … follow instructions and attach the two logs

see belowe the box you write in here … Attachments and other options

then Essexboy may be able to remove it for you

Thanks for the response. Problem is now solved.

Following advice on another forum which said that the uninstaller could be corrupted, she made a fresh install of Opera Beta and was then able to fully uninstall.