How To Fix Packet Burst In Modern Warfare 3 (MW3)

How To Fix Packet Burst Error In MW3

Players of Call of Duty, Modern Warfare 3 (MW3) have been experiencing “Packet Burst” error. It is a frustrating server error that leads to stuttering and lag during gameplay.

Players can know these problems with an on-screen indicator that confirms the issue. Actually, there are three squares on the left of your screen while Playing Modern Warfare 3 and that confirms that you’re suffering from a packet burst.

The squares may also be accompanied by actual text saying ‘packet burst’ which also confirms the problem.

In this post, you will learn how to fix Packet error in Modern Warfare 3 (MW3) on Steam or

How To Fix Packet Burst in Modern Warfare 3

Below are a few solutions that players can try to fix the packet burst problems that they are encountering while playing MW3.

Fix #1: Change The Internet Packet Priority

  • Go to “Device Manager” by Right-clicking on the Windows icon.
  • Expand “Network Adapters”, right-click the Realtek Gaming controller, and click on “Properties”.
  • Click on “Advanced” and then select “Priority and VLAN” property.
  • Select “Priority and VLAN Enabled” and click “OK”.

Fix #2: Restart Your PC/Console

  • Just turn off your PC or Console.
  • Wait for a few seconds.
  • Turn on your PC/Console.
  • Now, launch the MW3 and see if the problem is fixed.

Fix #3: Restart Your Internet

  • Unplug your router/modem.
  • Wait for a few seconds.
  • Plugin back.

If you are on Wi-Fi and you have an ethernet cable then try to plug in the ethernet cable.

Fix #4: Reset Internet

Click on Windows icon, type “cmd” in search, and run it as an administrator.

Now enter the following command and hit ENTER after each one:

  • netsh int ip reset c:\resetlog.txt
  • netsh winsock reset
  • ipconfig /flushdns

Now, click on Windows icon and go to Settings > Network & internet > Advanced network settings > Network reset > Reset now.

Restart your computer.

Fix #5: Turn OFF Crossplay

If you are playing MW3 on a console, then turning off crossplay can fix the packet burst problem.

  • On Xbox Series S/X and Xbox One: Go to Settings > Account > Privacy & online safety > Xbox privacy > View details and customize > Communication & multiplayer > Turn off “You can join cross-network play”.
  • On PlayStation 5/4: Go to MW3 Settings > Account & Network > In the “Online” tab disable crossplay.

Fix #6: Add Ports For Modern Warfare 3 (MW3)

  • Click on Windows icon and type Windows Defender Firewall and open it.
  • Click on Advanced Settings and select Inbound Rules.
  • Click on New Rule and select Port and click on Next.
  • Select TCP and click on Specific local ports and paste “3074,3075,27015-27030,27036-27037” and click on Next.
  • Click Next > Next, name it “cod tcp” and click on Finish.
  • Click New Rule, select Port and click on Next.
  • Select UDP and click on Specific local ports and paste “3074,4380,27000-27036”, then click Next.
  • Click Next > Next, name it “cod ucp”, and click on Finish.


I hope these fixes have helped you to successfully resolve the packet burst error that you encountered in Modern Warfare 3 (MW3).

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