How To Troubleshoot Black Desert Online Error Code 12009?

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Written By Rahul Choudhary

Hey, I'm a Digital Marketer by profession and a traveller by choice.

If you’re encountering Black Desert Online error code 12009, you’re not alone. Many players have reported this issue. It usually appears during game installation or when trying to install a new patch.

The most common cause of this error is a remnant version.dat file. However, there are a few other potential causes, such as corrupted DNS cache, antivirus interference, proxy servers, etc.

No matter what the cause, we’ve compiled a list of the best workarounds to help you fix this error code.

Troubleshoot To Fix Black Desert Online Error Code 12009

Fix 1: Simply go to C:\Program files\x86\Black Desert Online, and rename the version.dat. file.

Fix 2: Check your device antivirus program settings, and add the BDO under as the exception.

Fix 3: Flush the DNS cache.

Fix 4: If you are using VPN or Proxy then consider disabling them.

Fix 5: There are three primary ports that need to be accessible in order to connect to BDO game servers or update the game on a PC. If these ports are not supported by UPnP or are closed, you may encounter this error. The most popular ports for TCP and UDP are 8888, 9991, and 9993.

Fix 6: If the error still persist then contact the game support.

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