Error “Dev Error 5573” prevents you from playing Call of Duty: Warzone. There are a number of factors that can cause this problem, but most of the time it’s because of an update to the game.
Remember that Activision has already published certain hotfixes to address this problem number. Make sure you have the most recent version of COD loaded on your computer or console before attempting any other local fixes.
Method 1: Run All Available Call of Duty Updates
If you’ve been keeping up with this problem, you know that Activision has published a couple of hotfixes in an attempt to resolve it, but so far they haven’t been successful.
If you launch the most recent revision of the game, you will significantly reduce the likelihood of seeing the 5573 problem, even though it was not completely eliminated.
If you never play with other people (other than in Zombie Mode), you probably don’t need to update to the newest version of the game as soon as it comes out. Nonetheless, fixing this error code is well worth the effort required.
Make sure there is no pending Call of Duty installation update on PC if you’re experiencing this problem when attempting to launch using Battle.Net.
To install an update on an Xbox One, Xbox Series X, PlayStation 4, or PlayStation 5 system, you need to exit the game and launch it again before the update notification screen appears.
After you’ve checked that any Call of Duty updates are up to date and installed, try restarting the game to see whether the 5573 error still occurs.
If the error message persists when you try to join a Multiplayer or Zombie game, continue on to the next possible solution.
Method 2: Choose a Region That Has Not Experienced a Cold War Loadout
A choice hailed by the Call of Duty community, allowing shared sums across Cold War and Warzone, has turned out to be missing in implementation months after it became public.
If the Dev Error 5573 only appears when you use a Cold War loadout to enter a multiplayer Warzone game, switching to another loadout should fix the problem.
In addition, there are a few loadout components that are known to cause this error code, so you may wish to avoid them until the problem is resolved. FFAR + PELLINGTON is one such loadout combo.
Update: To our surprise, the 5573 mistake affects more than just the FFAR + PELLINGTON loadout. Until until notice, you should also abstain from using any BlackOps-related tools, including as guns, attachments, and perks.
After you have removed the offending items from your Warzone loadout, you can test to see if the problem still exists by joining another multiplayer game.
If the issue persists, try the solutions that follow.
Method 3: Replace the Operator
You may be experiencing the infamous “operator glitch” in Call of Duty: Warzone if the steps above did not resolve your issue and you continue to receive the Dev Error 5573 whenever you attempt to join a multiplayer game.
You should expect to see this problem if you try to run the game while using a Cold War–era Operator; the most usually reported operator is Garcia.
If the problem is caused by an imported operator from Cold War, switching to a different operator from the list underneath the Operators category on the ribbon menu at the top of the screen should resolve it.
The next time you want to join a multiplayer game, try switching operators and making sure that your loadout does not include any equipment that were initially published for Cold War.