Destiny 2 has one quest known as Magnum Opus that requires a Strange Key, and many people are reporting a bug where states it has already been used. The quest appeared as part of the Bungies 30th Anniversary Update. Your task is to collect Strange Coins, complete bounties, and get a Strange Key. Some players are experiencing a major issue and the problem is the key is then vanishing. We troubleshoot the Strange Key glitch in Destiny 2 below.
Once you have the strange key, you need to travel to Eternity. You can then go to Xur’s Treasure Hoard. Once you go through the portal there should be a pile of rocks on the right. The key should work on that pile of rocks. It is here that many people are having the issue.
Check out our guide on how to get to this point. Make sure you have completed all the steps before continuing. After this, the most important tidbit of knowledge that will solve this issue is to understand that this quest is a one-per-account chance. You need to be using the character you picked up the Magnus Opus quest with. Not all your characters can complete it. This is not made explicit and seems to be the cause of confusion and the supposed glitch for many.
Destiny 2 Magnum Opus Glitch
If you have picked up the key from Xur but it vanishes once you reach the stone formation, this is because you have probably tried it with a different character. If you have a character who has used the Strange Key and others are now stuck on this step, they won’t be able to complete it. Your other character has already done it and it excludes the rest. If the Strange Key says it’s redeemed but is nowhere in your inventory, this will also be the problem.
Some have tried deleting the quest altogether. This has resulted in problems with the Magnum Opus quest itself. If this occurs, it will be best to tag a community manager for advice.
If you need further help with Destiny 2 Shadowkeep, check out our guides on Dead Ghost Locations, Jade Rabbit Locations, and Eyes on the Moon - How to Start Vex Invasion. If it's Exotic Weapons that you're after, we've got you covered with our Pain And Gain Exotic Quest and Deathbringer Exotic Rocket Launcher - Symphony of Death guides. Going back in time for new players, we can offer you guides like Ikelos Weapons - How to Get SMG, Sniper Rifle, Shotgun, or, if you're playing Forsaken content, guides like Corsair Down & Badge - Dead Body Locations.