Whether the latest update broke something, or your OS is no longer supported, there are only a few things you need to do to be fully prepared for the worst!

Notable Versions/Events

For pairing a Steam Controller, any version containing old Big Picture Mode will work (up to 1685488080), but make sure to use desktop mode settings or -oldbigpicture to be shown the necessary menus.

The latest version of Steam that works on Windows 7/8/8.1 and macOS 10.13/10.14 is 1730853027.

However, zstd-compressed depot chunks have only been implemented as late as beta 1738807127, which means any version older than that cannot download games distributed in this format.

Please refer to sections Workarounds and Tricks, Stay Logged In Past End-of-Life and Using SteamCMD After Client Starts Breaking if you want to run Steam on an unsupported OS.

Disclaimer

This is not a long-term solution for unsupported OSes!

The longer an OS goes unsupported, the more difficult it becomes to keep things operational.

Therefore, only consider this guide as buying time, unless you have a specific use case (i.e. having a Windows 7 computer for the authentic 2000s/2010s feel or a Mac that runs 32-bit applications), or your PC isn't powerful enough to upgrade.

Therefore, you should either:

• Switch to a Linux distribution like EndeavourOS (quickest updates, occasional hiccups, Arch-based) or Linux Mint (stable, but updates infrequently)
  • GPUs without Vulkan >1.3 support pose additional challenges as DXVK requires it, and DXVK is required to play DirectX-based Windows-only games on Linux
• Upgrade your computer if you can (and preferably install Linux for better performance, privacy and longevity)

If you switch to Linux, please note that:

• You should only use Windows applications as a last resort (there are alternatives and variants of almost all applications that work on Linux natively!)
• Refer to the wiki/documentation for your distribution, e.g. Linux Mint Documentation, EndeavourOS Discovery, Arch Wiki, Gentoo Wiki, and after gaining some experience, don't be afraid to use wikis of distributions other than the one you're using
  • Most importantly, if you use an Nvidia GPU, you will likely need to refer to wiki instructions to install video drivers
• For support, use forums or chat rooms for your distribution, e.g. Linux Mint Forums/Discord, EndeavourOS Forum/Telegram/Matrix, Arch Linux Forums (warning: not friendly to newbies), Linux Questions, All Things Linux, more Discord communities
• Some games (especially latest titles) may not work out of the box or at all -- refer to ProtonDB and WineHQ AppDB
• Multiplayer anticheat is only supported on a case-by-case basis -- refer to Are We Anti-Cheat Yet?

Preface

I am a Linux user. I do not use Windows. I cannot guarantee instant or reliable support in case you get stuck in the process, and I can't test certain things myself (not on a whim, at least).

Please understand this, and don't hesitate to ask elsewhere and link to other resources that could complement this guide, especially if things drastically change at some point.

Also, do it at your own risk! Steam is, after all, software that is always connected to the Internet, and it may be a bad idea to keep that running in the background if you can't be sure if it's secure.

Downgrading

There are a couple of methods to downgrade the client. All of them require the Steam client executable to be present.

Obtaining Steam executable

Note: Skip this part if you already have a working Steam installation.

It is possible to use Steam's updater with nothing more than the main Steam executable. If you don't already have a working Steam installation (or the bricked update made the main executable useless), here's how you can get it.

The executable version doesn't matter. These files have been archived using Wayback Machine. Obtain an archived version for:

• Windows
• Linux
• macOS

Then, during or after download, remove the SHA1 file hash from the name (everything after .zip), unzip to the location you wish Steam to be installed in (or has been), and proceed with the instructions below.

The quick, online way

Using copies of Steam packages and manifests that have been archived online, it is possible to have the client downgrade itself.

Internet Archive Wayback Machine archives pages and files directly, which ensures that they have not been tampered with, and that is the source this method uses.

The procedure:

1. If you previously enrolled to Steam Client Beta, launch Steam with -clearbeta and dismiss the "Steam needs to be online to update" error
2. Exit Steam

3. Launch Steam with:

   -forcesteamupdate -forcepackagedownload -overridepackageurl http://web.archive.org/web/<date>if_/media.steampowered.com/client -exitsteam
   

   — replacing <date> according to The Downgrade Table section under Wayback Machine date

   Note: If this doesn't work, also append -textmode

4. Steam should downgrade itself and exit

5. Done! Start the client, and it should work

   Note: On Windows, if you get a dialogue about the Steam registry path not being writable, click Repair

6. Before launching Steam another time, create steam.cfg as per section Preventing Client Updates

If step 3 fails (less secure, relies on manual backups rather than Wayback Machine):

1. Navigate to this page
2. Use The Downgrade Table section and find the manifest version you need
3. Navigate to the directory of the OS you are using (steam_client_<your_OS>), and under it, navigate to the directory of the version you want to use
4. Copy the URL for step 3 of section The quick, online way

Note: For this to work, ALL packages and the package manifest must be archived as per the client manifest to a file server or a digital archive service such as Wayback Machine. Each "file" entry corresponds to a path under http://media.steampowered.com/client/.

The long, offline way

If you made a backup of Steam packages, or took someone else's at your own risk, this is how you can restore the update.

The procedure:

1. Navigate to the Steam directory
2. Remove the contents of package folder
3. Copy backed-up packages to package
4. Launch Steam, let it update, and on the Extracting package... step, press Cancel
5. Remove package > tmp
6. Launch Steam again
7. Before launching Steam another time, create steam.cfg as per section Preventing Client Updates
8. Done!

Restoring the client in case of a faulty downgrade

If you give up, it is sufficient to do this and not lose any of your data:

1. Delete steam.cfg if it was previously created
2. Launch Steam with these arguments:

   -forcesteamupdate -forcepackagedownload -exitsteam
   

3. The client will exit; the next time you start it, it should be back to normal

Preventing Client Updates

If you need to downgrade your client, it is only natural that you don't want it to self-update right away.

Editing steam.cfg

Using steam.cfg, client updates can be prevented permanently.

1. Navigate to the Steam directory:

   • Windows 32-bit: C:\Program Files\Steam
   • Windows 64-bit: C:\Program Files (x86)\Steam

   ...and our special guests, since the procedure works the same way:

   • Linux: ~/.local/share/Steam
   • MacOS: ~/Library/Application Support/Steam

2. Create a new file, steam.cfg, unless it is already present

3. Paste this in:

   BootStrapperInhibitAll=enable
   

   This can be disabled by prepending the line with a # so that it is commented out (ignored) until needed.

The Downgrade Table

Note: Manifest version corresponds to the Unix time the build was finalised, which can be used to determine the date.

• steam_client_win32 - Windows
• steam_client_ubuntu12 - Linux (regardless of distribution)
• steam_client_osx - macOS

Manually archived versions

Do it at your own risk!

• 1674790765
  • Windows: Copy URL
  • Linux: Bins only
  • macOS: Not archived

The Downgrade Table (SteamCMD)

• steam_cmd_win32 - SteamCMD Windows
• steam_cmd_linux - SteamCMD Linux
• steam_cmd_osx - SteamCMD macOS

Workarounds and Tricks

Bypass manual downgrading

Refer to section Obtaining Steam executable.

Simply run the Steam executable and it will install the latest update supported on your OS version.

Bypass manual downgrading (installer method)

Currently, the Steam installer doesn't appear to have an OS version check (confirmed with Windows installer). It does however install the latest update for the OS variant (e.g. installing on Windows 7 installs latest Steam for Windows update), but the main Steam binary (steam.exe, steam, etc.) does obey the specific OS version.

So, it is sufficient to:

1. Download the official Steam installer provided by Valve here
2. Complete the installation as normal
3. Delete the package directory
4. Start Steam. In case of issues, it may be necessary to start Steam with -no-cef-sandbox and deleting Tier0_s.dll and Tier0_s64.dll from Steam install directory
5. Let Steam install the latest version supported on the running OS
6. Done! Start the client, and it should work

VxKex (Windows 7)

VxKex is an open source project that attempts to close the gap between Windows 7 and newer Windows versions by increasing compatibility of Windows 8+ applications. As of the time of writing, Steam is confirmed to work by using dotexe1337's fork, and so are numerous other applications.

While the original project includes instructions, FAQs, etc., as of the time of writing it is unmaintained, so use either dotexe1337/VxKex or YuZhouRen86/VxKex-NEXT forks at least for the time being.

Please also refer to section Windows 7: Issues running newer Steam versions with VxKex, and keep in mind that antivirus software may interfere with the process.

Before installation

Consider making a separate installation of Steam for the purposes of running the newer client versions. Since some features tend to work while others don't, you may need to switch between the two installations -- just make sure not to run them both simultaneously.

In order to do this, simply copy steam.exe to a desired location, which should be an empty directory, and follow along the instructions.

Instructions

1. Download the latest release of VxKex (or fork)
2. Install VxKex; you may need to add the install directory to AV exclusions (default: C:\Program Files\VxKex)
3. Navigate to Steam install directory (default: C:\Program Files (x86)\Steam)
4. Right click steam.exe > Properties
5. Enter VxKex pane
6. Tick "Enable VxKex for this program" and "Report a different version of Windows"
7. Set the reported Windows version to "Windows 10" (or later, if available)
8. Press "OK"
9. Either ensure steam.cfg is deleted to install the latest client update, or refer to section Downgrading to install a specific version
10. Done! Start the client, and it should work

Stay Logged In Past End-of-Life

Considering that the Steam backend is updated alongside the client, the version you choose to use may not be able to authenticate in the future. Since nobody knows how this will break in the future, there are two possible scenarios (or three, if you lose your current login entirely). However, there is nothing you need to do in advance, as reverting possible issues is easy to do.

Note about accounts with no Steam Guard

On some older versions of the client, new login attempts fail if the account in question has no Steam Guard (2FA) set up. It can be set up here.

Scenario: Client automatically enters offline mode

This is the ideal outcome in case Valve accounted for the situation. The client will simply launch in offline mode and all installed games and applications are ready to be used. However, it may take a while longer for the client to load, as it is trying to connect and authenticate.

Improvement: In order for Steam to load more quickly, simply follow the procedure under section Keeping the client offline forever.

Scenario: Client logs you out

The login window shows up, containing the login prompt or account switcher. Since the client cannot authenticate, it may seem like it's a dead end, but it's actually very easy to overcome this issue.

Solution: Simply follow the procedure under section Keeping the client offline forever. Whether the account is currently logged in or not, as long as it has been logged in to once, editing loginusers.vdf is sufficient to log in offline.

Scenario: Steam install deleted/corrupted

Note: For the helper device, if Steam is already being used, make a backup of Steam and wipe it, then restore afterwards.

If the latest version of Steam cannot be run on your preferred device, running Steam on a device using a supported OS ("helper") can be used to authenticate to Steam instead, transferring all necessary files for the client to log in offline.

The procedure:

1. On the unsupported device, perform the client downgrade to the latest Steam version it supports if it is not present/operable
2. On a supported ("helper") device, install Steam and log in to your account
3. Exit the client
4. From the Steam install directory, copy appcache, config, steamapps (optional), userdata and local.vdf
5. Transfer these files to the unsupported device, into the Steam install directory
6. Follow the procedure under section Keeping the client offline forever
7. Making sure that Steam works on the unsupported device, uninstall Steam from the supported device to remove leftovers, if needed

Additional steps for specific versions:

• 1570046470 or older: packageinfo.vdf needs to be converted using Auto PackageInfo Converter

Using SteamCMD After Client Starts Breaking

Given that Steam is constantly tweaked and upgraded over time, outdated versions eventually stop being usable. Downloads/updates, and especially the ability to log in may stop working, rendering the online components of the client unusable.

However, it is likely that SteamCMD will continue working way past the "expiration date", so this is how you can use it to download/update games going forward.

As another alternative, there is Steam Depot Downloader, but this is not covered in the guide.

Keeping downloads operational for the long term

While the client (service) will forever and ever stay a requirement for launching Steamworks API-powered games, or, rather, those that refuse to work without it, or additional DRM on top of it, downloading games should still be possible using SteamCMD. Considering it is an actively updated command line utility, there is no good reason to remove compatibility for older OSes, unless, perhaps, the web transitions to a new version of SSL that won't be supported on older OSes, or Valve compiles it against libraries that were never added to older OSes.

Moreover, with the industry transitioning away from older OSes... I guess you can imagine Steam might not exactly keep blooming with new game releases that can be played on them.

SteamCMD summarised for players

First of all, while it involves the command line and it is mainly used by developers and game server administrators, please don't be scared away. Yes, accomplishing things with it isn't a one click operation (until someone makes a batch script or software I may include here), but it is worth getting a hang of.

Installing

From the SteamCMD wiki page, under Downloading SteamCMD, on Windows, download the zip archive and extract it to the desired location. For other OSes, follow the instructions on the page.

Bypass minimum supported OS check

Start SteamCMD with -overrideminos. This only appears to work if it is the first argument (e.g. steamcmd.exe -overrideminos +force_install_dir (...)).

Launching and logging in

Anytime before launching SteamCMD, make sure to close any running instance of Steam in order to prevent it from interfering with the Steam installation.

For convenience, use whichever you prefer:

• Desktop shortcut

  After creating the shortcut, in the Target field, append:

  +login <username>
  

  — replacing <username> with your Steam username.

• Batch/shell script

  Going for this option most likely means you understand how it's done, and since this guide addresses multiple OSes, I will leave you to it. For now.

Launch SteamCMD as prepared earlier. If this is the first time you are launching it or any updates arrived since the last time you used it, it will self-update, so wait for that to finish.

You will be prompted to log in using your Steam credentials. Once you successfully log in, you will be presented with a Steam> prompt.

In order to learn the usage of commands yourself, use this command:

find <query>

Linking steamapps

In order to prepare SteamCMD to be used for managing an existing game library, its steamapps directory needs to be linked into the SteamCMD installation.

Close SteamCMD, remove its steamapps directory, then run this command:

• Windows (may require running as administrator):

  mklink -d "C:\path\to\SteamCMD\steamapps" "C:\path\to\Steam\steamapps"
  

• Linux/macOS:

  ln -s /path/to/Steam/steamapps /path/to/SteamCMD/steamapps
  

Downloading and updating games

The simplest way to download/update games is to use your Games page while SteamCMD is running. Picking download location and moving across library folders is unimplemented, but the Steam client can be used to accomplish that.

If you want to use the command line, in order to download/update games, use the command:

app_update <appid>

Additional arguments:

• -validate (recommended): validate Steam application after download
• -language <lang>: download with desired language
• -beta <betaname> -betapassword <pwd>: download beta, and specify password if it is required

Downloading and updating Workshop content

The simplest method is to press Subscribe on the mod you want, and the next time you use app_update, the Workshop item will be downloaded.

Otherwise, in order to manually download/update Workshop content, obtain the App ID of the game to download content for, and obtain the Published File ID from the end of the URL of a Workshop listing page.

Use the command:

workshop_download_item <appid> <PublishedFileID>

Uploading Workshop content

Refer to Steam Workshop Implementation Guide > SteamCmd Integration.

Using custom library folders (usually unneeded)

Bug: force_install_dir removes all custom library folders, each folder will have to be re-added when Steam client starts (library_folder_add isn't even present in SteamCMD). This is presumably since SteamCMD always uses the main install directory first, edits the library folder configuration there, and only then switches to the forced location.

SteamCMD, by default, uses the location it's stored in. If steamapps directory is linked to an existing Steam installation's steamapps directory, it will use it as well, inheriting its custom library folders.

In order to switch to a different location, use this command:

force_install_dir <library_folder>

For additional convenience, for each library folder you have, you may create a copy of the shortcut you made, each with this argument appended to Target field:

+force_install_dir <library_folder>

Making Backups

What's safer than making client backups, especially if they are available to all? Here's how you can feel even safer and contribute, everyone wins!

Manual backup

If you want to create a backup of the last working Steam version, simply make a copy of the package folder, as well as the Steam executable.

Automated backup

This script was developed for use in a Linux terminal, and makes a local backup as well as requests remote archival (ex. to Wayback Machine), including SteamCMD.

#!/bin/bash
package_url="http://media.steampowered.com/client"
lists=$(echo steam_client_{win32,ubuntu12,osx}.txt steam_cmd_{win32,linux,osx}.txt)
backup_prefix="/mnt/hdd/Archive/steam_client_archive"

# Change to directory to store manifests and lists in
mkdir -p "$backup_prefix/tmp"
cd "$backup_prefix/tmp"

for manifest_name in steam_client_{win32,ubuntu12,osx} steam_cmd_{win32,linux,osx}; do
    # Retrieving all URLs to archive
    echo "Getting manifest and filenames"
    manifest_url="$package_url/$manifest_name"
    echo "$manifest_url" > $manifest_name.txt
    curl -sO "$manifest_url"
    grep -e \"file\" -e \"zipvz\" $manifest_name | cut -d\" -f4 | sed "s|^|$package_url/|" | awk '!x[$0]++' >> $manifest_name.txt

    # Making a local backup
    version=$(grep \"version\" $manifest_name | cut -d\" -f4)
    backup_path="$backup_prefix/$manifest_name/$version"
    if [[ -d "$backup_path" ]]; then
        echo "Backing up $manifest_name $version"
        mkdir -p "$backup_path"
        mv $manifest_name "$backup_path/$manifest_name.manifest"
        xargs -n1 curl -O --output-dir "$backup_path" < $manifest_name.txt
    else # Skip if already present
        echo "Skipping backup of $manifest_name $version, backup already present"
    fi
done

# Archiving URLs remotely
# Example usage: Wayback Machine - Save Page Now script by overcast07
# Obtain from https://github.com/overcast07/wayback-machine-spn-scripts
# Substitute `spn` with path to spn.sh unless installed via AUR
cat $lists > url_list.txt
spn url_list.txt

# Cleaning up
rm $lists steam_client_{win32,ubuntu12,osx} steam_cmd_{win32,linux,osx} url_list.txt

Extras

Here are some extra procedures, for convenience.

Keeping the client offline forever

Note: Don't do this unless the client stops being able to connect to begin with, otherwise downloads/updates, multiplayer and other online features won't be available!

Note: This only works for the currently logged in account ("MostRecent" = "1")! Switching is not possible offline.

This makes the client launch faster and make no connection to Steam (please confirm), which is beneficial if it cannot connect.

The procedure:

1. Navigate to the Steam directory, as outlined before
2. Enter config directory
3. Edit loginusers.vdf
4. Under the desired user's SteamID64 (identifiable by "AccountName"), make sure these options are set to "1", adding any missing options if needed:

   "RememberPassword"          "1"
   "WantsOfflineMode"          "1"
   "SkipOfflineModeWarning"    "1"
   "AllowAutoLogin"            "1"
   

5. Make the file read-only to prevent accidentally switching off "WantsOfflineMode" while using the client (ex. by using Steam > Go Online...)
6. If you haven't already, edit steam.cfg as per section Preventing Client Updates

Removing the countdown banner

• Universal

  Use this launch argument, read full explanation:

  -pretendeol-w10
  

• VGUI banner

  WIP, try this procedure

• Desktop UI (modern) banner

  WIP, hide ._1AcQ7PwcnBGsbAmuKOZHvd (previously .titlebarcontrols_OSEndOfLifeAlertsButton_1AcQ7) using the "Make webkit.css work again" procedure

  Another method (discovered by kojiro hyuga):

  To remove countdown banner in new desktop UI:

  1. Go to Steam\steamui\chunk~2dcc5aaf7.js

  2. Find and delete following:

     ("#Steam_EOLAlert",t.daysUntilOSEndOfLife,t.strOSName)

     ().OSEndOfLifeAlertsButton

VGUI (old UI) mode

In order to use the VGUI-based UI (used before the 2023 revision), downgrade to version 1690583737 and launch Steam with:

steam://restartinuimode/vgui

Otherwise, downgrade to version 1689034492 and launch Steam with -vgui.

Troubleshooting

In case downgrading causes additional issues, they will be addressed here.

Friends list no longer works in VGUI mode

In order to keep using browser-based Friends, use FixedSteamFriendsUI.

Additionally, friends list is accessible with a standalone browser here. Note that some functionality like in-game status and game invites won't work when using it outside of the client.

In the case of Firefox, PWAsForFirefox can be used to more closely replicate the original experience.

Alternatively, old Friends List does still work to an extent. Activate it by using another switch, -nofriendsui, and in addition, follow the procedure under Steam features disabled on purpose. This way, chat is mostly functional.

Steam features disabled on purpose

Some features, such as purchasing games, are disabled in some cases if the client version is too old. This check can be worked around by spoofing the version.

1. Navigate to Steam > package
2. Edit steam_client_<OS_type>.manifest
3. Replace the version number in "version" field, or remove it as such:

   "version"               ""
   

Linux: Overlay/BPM crash; Unable to load 'libpangoft2-1.0.so'

On newer glibc versions, the version of Pango distributed with Steam causes a crash due to a change in specification. (Read more)

The crash appears to happen whenever Big Picture Mode or the Steam overlay is opened.

This can be worked around by installing execstack (AUR), then running the following commands:

$ cd $HOME/.local/share/Steam/ubuntu12_32/panorama
$ cp libpango-1.0.so{,.bak} # Create a backup
$ execstack -c libpango-1.0.so # Disable the executable stack flag

You may need to use the -noverifyfiles argument when starting Steam in order to avoid the file being overwritten.

Windows 7: Issues running newer Steam versions with VxKex

Issues unresolved

• Friends Network (chat, online status, etc.)

Connection issues

Start Steam with -tcp.

Chromium hangs indefinitely

First, temporarily disable browser GPU acceleration using -cef-disable-gpu.

Then, disable "Enable GPU accelerated rendering in web views" under Settings > Interface for a permanent change.

Attribution

Testing, help, fixes, etc.:

• Bergamot
• tintingaroo
• EricFromSouthTown
• TiberiumFusion
• blob42
• bidulless
• Hyperduel

Archivists:

• mv

Get Assistance

If you need help for any reason, give the Client Downgrades Discussions Area a visit.