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  3. Error Code: 126 when trying to start plutonium. Had this problem randomly for 2 years

Error Code: 126 when trying to start plutonium. Had this problem randomly for 2 years

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  • The_Lostsauceundefined Offline
    The_Lostsauceundefined Offline
    The_Lostsauce
    wrote last edited by
    #1

    Screenshot 2026-01-23 205552.png

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    • PacketGhostundefined Offline
      PacketGhostundefined Offline
      PacketGhost
      wrote last edited by
      #2

      I would honestly load a new version of windows and not download any software that did not come with it

      The_Lostsauceundefined 1 Reply Last reply
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      • PacketGhostundefined PacketGhost

        I would honestly load a new version of windows and not download any software that did not come with it

        The_Lostsauceundefined Offline
        The_Lostsauceundefined Offline
        The_Lostsauce
        wrote last edited by
        #3

        @HonDipo I just recently upgraded to windows 11 when getting a new motherboard. I had this problem with windows 10 as well. I can try I just don't see how that can be my problem

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        • PacketGhostundefined Offline
          PacketGhostundefined Offline
          PacketGhost
          wrote last edited by
          #4

          I Have an old 2012 HP z420 workstation it runs plutonium with no issues. I highly suggest getting the official bo2 game key from steam and that should solve any issues

          The_Lostsauceundefined 1 Reply Last reply
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          • PacketGhostundefined PacketGhost

            I Have an old 2012 HP z420 workstation it runs plutonium with no issues. I highly suggest getting the official bo2 game key from steam and that should solve any issues

            The_Lostsauceundefined Offline
            The_Lostsauceundefined Offline
            The_Lostsauce
            wrote last edited by
            #5

            @HonDipo I have BO2 officialy from steam. It's okay I've come to the realization that after 2 years of having this problem that I cannot be helped. I have not ever seen 1 other person complain about this issue and nobody knows how to fix it

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            • PacketGhostundefined Offline
              PacketGhostundefined Offline
              PacketGhost
              wrote last edited by
              #6

              Error Code 126 usually means Windows can’t load a required DLL.

              Common things to check:

              Install / repair Visual C++ Redistributables 2015–2022 (both x86 and x64)

              Install DirectX End-User Runtime (June 2010)

              Check antivirus / Windows Defender quarantine and whitelist the entire Plutonium folder

              Make sure the game files are fully extracted and not missing any DLLs

              Avoid long or weird install paths (use something like C:\Games\Plutonium)

              Run Plutonium as administrator

              If it still fails, the error message sometimes mentions a specific DLL — that usually points directly to what dependency is missing. Knowing which game (BO2, MW3, etc.) and Windows version also helps narrow it down.

              Hopefully one of these fixes it.

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