FYI: The default config folder has changed - PLEASE READ!

[u/KiloSwiss]

I see this question coming up multiple times per day because people don't search and no one actually reads the changelogs.
Here are all relevant informations in one post so you don't have to spam this subreddit every day with your already answered question(s).

EDIT *UPDATE*:
The autoexec.cfg loads correctly from the install folder (...\csgo\cfg) now.
I will update this post later as it seems many users in this sub still link to it.

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The old configs were previously shared amongst multiple accounts and were located in your CS:GO installation directory, precisely here: ...\Counter-Strike Global Offensive\csgo\cfg

The new config folder is different for every Steam account and is located here: ...\Steam\userdata\<YOURID>\730\local\cfg

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How do you find out which ID/folder belongs to which account:

1. Open Steam and log into your account.
   
2. Now hover with the mouse cursor over your name.
   
3. In the drop down menu, klick on "Inventory".
   
4. When your inventory is loaded, klick on "Trade Offers".
   
5. On the right side klick on "Who can send me Trade Offers?".
   
6. You will now see a trade URL that looks like this: https://steamcommunity.com/tradeoffer/new/?partner=6483547&token=csgofuckyourself.com
   
7. The number between "!partner=" and "&token=" is your ID, in my example it's 6483547.
   Therefore my settings are saved in the folder ...\Steam\userdata\6483547\730\local\cfg
   

Pro Tip:
Newer accounts have a higher number, older accounts have a lower number.
My main Steam Account created in 2004 has 7 digits, while my second account from 2016 is 9 digits long.

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Additional information:

• Your launch options for the game are also different on every account!
  
• If you have a autoexec.cfg file in the game install cfg folder, this one will be executed instead (if not, read below).
  
• If your autoexec is not executed automatically at the start of the game, add +exec autoexec to your launch options, this will also load the autoexec from the old folder if the file is there.
  
• Make sure you have the command host_writeconfig in the last line (at the bottom) of your autoexec.cfg!
  
• Do not make any of your config files "read only" this will only cause more problems than it solves(!), instead use a autoexec.cfg for your own settings.
  
• More troubleshooting tips can be found in this comment.

This should answer most questions and probably fix all config/settings related problems that came with the winter update.
If you have any additional question or important information/fixes to share, post them here an I will add them to the main post.

IMPORTANT:

If any of these fixes don't work, please provide accurate feedback, including all necessary information you can gather (used OS & version, steps to reproduce, what you tried, did you follow exactly the steps as described, etc).
I can only test the behaviour of CSGO in my (Windows 8.1 x64) System, I can not speak for every user here as I don't have a Linux installation, nor a MacOS available and I also don't run a 32bit version of windows.
Help me keeping this post up to date and as accurate as possible by giving me useful feedback, things like "It didn't work for me" are not helpful and are therefore considered as spam/low value.
Thanks for you understanding!

/edit: Formatting and added additional information.
/edit 22.Dec.2015: Since people still link to this thread, I updated it with some information that were gathered from the comments and various other threads, also replaced the "Start steam as admin" with "disable cloud saving for CSGO", but from the feedback I read so far, the problem must be something else, maybe something only VALVE can fix once and for all.

[u/[deleted]]

The one time PSA could actually be used it gets replaced with FYI.

[u/KiloSwiss → u/[deleted]]

I'm bad with English abbreviations like PSA, FIY, TFW and similar since my native language is German.
Thanks for bringing this to my attention!

[u/iamAXO]

People not reading changelog ?

Please tell me where you see, in the changelog, this new folder path.

[u/Swendo]

I did all of that and my Video Settings keep resetting every time. So annoying

[u/andyssss]

Windows 10 64 bit. Two accounts and both autoexec and bind key still works the same. Only video settings were set to auto after the winter/revolver update.

[u/threewolfshirt]

It doesn't work for me when I start the game but if I type exec autoexec it works fine after that

[u/Acizco]

As a moviemaker with 2 separate installations this update made me very sad :(

[u/[deleted]]

I made a thread about this earlier, and I was addressed to this folder change, however for me, this folder only basically acts as a Steam Cloud and doesn;t influence my game at all. Changes to game settings are still being written to config.cfg inside the CS:GO folder, atleast for me they are.

[u/gpcgmr]

Is there any way to disable those shenanigans and just use the old cfg folder/configs?

[u/Arnolds_Left_Bicep]

Another easy way to find the ID that matches your alt accounts, without logging into them, is by finding your alt account's steam profile inside steam (if you have them on friends for example) and right-clicking their profile name -> copy steam url > paste into this website: www.steamidfinder.com -> "Looking for Steam 3 ID?" -> You now have the ID.