How to fix ‘our level fastfile is different from the server’ error in Black Ops 6

Like most multiplayer games that release over time, Call of Duty: Black Ops 6 has experienced various issues and errors that can occasionally break the game or temporarily prevent players from playing.

One recurring error in multiple COD titles, including BO6, is the ‘our level fastfile is different from the server’ bug you may randomly encounter as you queue up for multiplayer. Let’s talk about this issue and what you can do to fix it.

‘Our level fastfile is different from the server’ BO6 error explained

The quickest go-to solution for fixing the ‘our level fastfile is different from the server’ error during your BO6 playthrough is to restart the game. Backing out of the match and restarting BO6 usually resolves this issue without further complications.

If you’re lucky, you may not even have to close the game entirely. Returning to the main menu is often enough to fix the error, at least temporarily, allowing you to queue up for your matches again with fewer interruptions.

In very rare instances, you may have to restart your PC or console to fully resolve this or other related BO6 errors. Reloading your game should do the trick for this particular one, but it’s better to be safe than sorry.

In other cases, particularly during Black Ops 6’s launch, it may be entirely a server-side problem that Activision has to step in and resolve. Only time will tell if this is the case.

Fortunately, Call of Duty has multiple resources to update the community on the latest bug fixes and feature additions, including their CODUpdates X/Twitter and Online Services status pages. The former is where you should check if you’re having occasional errors or stability issues, while the latter is more helpful for persistent connection issues.

Although ‘our level fastfile is different from the server’ is an error that’s been around for years, the developers may patch it up this time around as more people play BO6. We’ve seen a few hotfixes patch problems with stability while using certain emotes, doing an exfil, or using particular perks, with more updates arriving in the future.