How to Fix Modern Warfare 233/39/45 Files Failed to Validate

With our help you will see that knowing how to fix MW2 33/39/45 Files Failed to Validate is easier than you think.

What to know about 33/39/45 Files Failed to Validate in Modern Warfare 2?

 When trying to play in the campaign mode, the game crashes, this is because the 33/39/45 files are not validated, it occurs due to a problem with recent Nvidia drivers, it may even be our antivirus, but it was indicated that it is due to the stability with the Nvidia drivers, it must be maintained until the situation is corrected, now when the files are verified they were not validated, so Steam downloads an update and does not start the game, looking for answers that help us regarding How to fix 33/39/45 files that could not be validated in Modern Warfare 2 please follow the following details carefully.

How to fix Modern Warfare 2 33/39/45 Files Failed to Validate?

 What we will do is revert the Nvidia drivers to 516.69 or 522.25, allow our antivirus to let the game run, which includes Windows Defender Firewall and Windows Security, while if that doesn't work we have to contact Activision support at Through its page https://support.activision.com/, the process described begins with the following:
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Revert Nvidia drivers: we will go to device manager with Windows search, here we expand the display adapters where we will choose our GPU, in the drivers option we choose to roll back driver and start the game.

Perform a clean installation of Nvidia in 516.69 or 522.25: we will go to https://www.nvidia.com/en-us/geforce/drivers/ to find the version of our driver, we will download 522.25 and run the installation, we choose advanced custom to do the clean installation, we continue according to the instructions on the screen to complete the installation and we can start the game.

Allow the game in Windows security: going through the configuration in privacy and security we have that in Windows security there is the option of protection against viruses and threats, being here we have protection against ransomware and we will allow an application through access controlled to the folder, we add it and we will examine all the applications, we must choose the cod exe application to add the game.

Allow the game in Windows Defender Firewall: we will enter the control panel for system and security, in Windows Defender firewall we have to allow an application or feature, we change the configuration to allow another application, we will examine and choose the game file to add it .

 It is evident that knowing how to Fix MW2 33/39/45 Files Failed to Validate allows us to return to the normal fun of the game.