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Move file called appmanifest_377160.acf out of steam folder, preferably to a folder named backup in the FO4 directory. Restart Steam. Now Steam thinks the game isn't installed; aka no more updates. Just add f4se_loader.exe as a non steam game and launch it that way.
This also works for SSE, just find the correct .acf file and move it.

26 comments

  1. LpoolGaz
    LpoolGaz
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    Still wanted to verify + update

    Had to go Offline to stop it.
  2. Khornelia
    Khornelia
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    • 2 kudos
    Thank you for this! I was not looking forward to losing my modlist lol
  3. stuckvalve
    stuckvalve
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    This will certainly work, but there are simpler options. If you've modded the game with F4SE and Steam behaves properly, you can simply set the game properties for FO4 in Steam to "Only update this game when I launch it." Then you always launch via F4SE (never via Steam) and no updates will be applied. If you're worried that you might forget or that Steam may bork that setting, you can go find the same manifest file on you PC. Instead of moving it, right-click it, select Properties and check the box for "Read-only." Now Steam can't update it even if you launch from there. 
    1. LuigiCadorna
      LuigiCadorna
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      The issue with this method is that Steam, for whatever reason, continues to disregard changes made to the fallout 4 update settings and always revert back to "Always keep game updated" setting. 
  4. WOTmodsproductions
    WOTmodsproductions
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    Hey so i tried this and it worked once, but as soon as I launch the game through the mod manager it re adds the game to steam and changes my settings on steam to "always update this game".The file called appmanifest_377160 is still missing from the game files after I moved it, but the game settings have reset themselves, if I close steam and reopen it again it changes to fallout 4 not installed.

    I have doubts that when and update comes that its actually going to stop it from updating as I cant change the update settings anymore, they revert back if I try and change to to only update when I launch the game, and like I say fallout 4 appears again in my library.

    Basically my fallout 4 disappears when I follow this but adds itself again when I launch the game with F4SE or mod manager, is this normal? 
    1. Blackdognation
      Blackdognation
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      Check to see if you can browse the games local files. I have the same thing happening, even updates the cloud, but if I browse local files, it shows no files. I also made the file mentioned Read Only.
    2. NiennaClawtooth
      NiennaClawtooth
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      I have the same thing happening, when starting through ModManager (I am using MO2) Fallout 4 reappears in Steam, and it´s changed to "always update game". 
      But: I CAN browse local files, it´s all there. I made the .acf file to read only too, and it is still missing from the games file folder, but I am not convinced that everything is "secured" now. I can only hope that my modded game doesn´t break after the update.
      Plus Steam has registered that I have "played today"......

      Edit: I have also reinstalled this mod https://www.nexusmods.com/fallout4/mods/26956?tab=description, just to be safe. 
  5. BossDaddyD
    BossDaddyD
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    IMO releasing out new updates on Bethesda's games is part of their corporate objective. Look at this: messing the mods made by community contributors extends the "lifetime" of their product now players will have to wait for mods to be compatible again and start all over again and again trying to find that sweetspot for the modded game's stability and quality. So don't expect game companies giving you free updates from the goodness of their hearts it's business and more time for the users equals more profits for them. Thank you to post author for this trick..
  6. Blackdognation
    Blackdognation
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     (Edit)... Looks like it may have worked. No local files when I try to browse them. Even after loading and saving a game. Guess we find out when the update comes.
  7. angryvegetarian
    angryvegetarian
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    Thank you so much for this.

    I spent months getting into the game, getting all the "right" mods, getting fully into the story, etc. Had to take a break and was planning on jumping back in. When I read about the update I realized my world was in danger. This is a huge relief to me.

    Thank you.
  8. yourdestinyishere
    yourdestinyishere
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    Currently playing a new game of FO4 based on the Midnight ride with a few of my own mods on top. Knowing that on the 25th a real update has been planned for FO4, this tutorial is a blessing. I'm gonna do this as soon as I get back behind my pc.
    I will update eventually, once I've completed my full playthrough 5 times (Namely, I will play up to the point of no return, and go with each faction (Plus America Rising 2) Just to get a taste of it all) and the Midnight Ride is actually updated fully.

    I was burned before by Skyrim's sudden update and the death of "A Dragonborns Fate" mod guide, and I don't want to get burned again.

    Once again, thank you so much.
  9. makar55
    makar55
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    I am not playing Fallout 4 currently but planning to do so in next 2 years, should I care about Fallout 4 updates or not?
    1. deleted1447194
      deleted1447194
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      Bethesda keeps updating their creation club bullcrap without ever adding any kind of fix for the base game or even dlc areas.
      All this does is mess up mods that rely on Fallout 4 script extender.
    2. makar55
      makar55
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      In long term run will these mods be updated?
    3. skullpoker
      skullpoker
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      As the constant unnecessary updates add to the install size, yes. You should care.
    4. Ironbatman300
      Ironbatman300
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      as bethesda adds unnecessary updates that don't fix any problems in the vanilla games/DLCs, mods built for previous versions of those games will tend to become incompatible. Generally it's recommended to not update after installing mods and to only install mods that are compatible with the currently installed version of the game being modded.
  10. zachsaballer
    zachsaballer
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    Really appreciate this post, my friend. I knew that I had done this before for Skyrim Special Edition on my last PC, right before the Anniversary Edition update came through and utterly wrecked the place (I found out just hours before it would've been too late for me and my modlist), but I couldn't quite recall which file I needed to go grab and secure in another folder.
    Thank you very much!!!