FIX "Your data is corrupt or didn't download properly." Modern Warfare Error!

“Your data is corrupt or didn’t download properly. You must reset your rank and unlocks to continue.”

Out of nowhere, I got this error while loading Call of Duty: Modern Warfare game.

It was so scary because losing your ranks and unlocks will be your worst nightmare. But, looks like it is a temporary bug, here is what the Infinity Ward says about this:

You can follow this and see if it helps. Do let us know if you have any more issues.

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