A lightweight native Windows utility that disables Steam's Chromium-based WebHelper when a game is running, restores it when you return to Steam, and keeps manual control available from the system tray.
Use the installer for the easiest setup, or download the DLL separately for a completely manual installation.
Steam uses several steamwebhelper.exe processes to power its modern Chromium-based interface. Those processes can continue using memory and CPU while a game is running.
SteamTrayWebHelper manages that behaviour automatically:
- Game running: disables CEF and closes Steam WebHelper processes.
- No game running: restores CEF so Steam's full interface is available again.
- Manual control: choose Automatic, On, or Off from the tray menu.
- Event-driven operation: reacts to Steam and Windows state changes without a constant polling loop.
- Easy recovery: remove one DLL to return Steam to its normal behaviour.
Important
SteamTrayWebHelper is an independent community project. It is not affiliated with, endorsed by, or supported by Valve Corporation. Steam client updates may change internal behaviour.
Both installation methods are provided as separate files on the Releases page.
| Download | Recommended for | Description |
|---|---|---|
Setup.exe |
Most users | Detects the Steam directory, closes Steam when required, installs umpdc.dll, and provides an uninstaller. |
umpdc.dll |
Advanced or portable use | Manual installation with one file placed beside steam.exe. |
- Download
Setup.exe. - Run the installer as administrator.
- Confirm the folder containing
steam.exe. - Complete installation and start Steam normally.
- Download
umpdc.dll. - Exit Steam completely, including its notification-area icon.
- Copy
umpdc.dllinto the same folder assteam.exe. - Launch Steam.
The default Steam folder is usually:
C:\Program Files (x86)\Steam
To uninstall manually, fully close Steam and delete umpdc.dll from the Steam directory.
The status artwork uses transparent backgrounds, allowing the icons to remain clean in both light and dark Windows notification areas.
| Tray icon | Status | Meaning |
|---|---|---|
 |
CEF Enabled | Steam WebHelper is available and Steam's complete browser-based interface can run normally. |
 |
CEF Disabled | Steam WebHelper is disabled to reduce unnecessary background activity while gaming. |
Right-click the tray icon to choose a mode:
| Mode | Behaviour |
|---|---|
| Automatic | Recommended. Follows Steam's real game-running state. |
| On | Forces CEF and Steam WebHelper to remain enabled. |
| Off | Forces CEF and Steam WebHelper to remain disabled. |
The active mode is marked with a checkmark in the tray menu.
SteamTrayWebHelper is an independent continuation of Aetopia's NoSteamWebHelper, preserving the original concept while expanding it into a more complete and user-friendly utility.
Aetopia's repository was archived on 10 February 2026 and is marked deprecated. This version modernises the interface, separates its manual override from Steam's own state, improves internal event handling, and provides both installer-based and manual downloads.
| Area | Aetopia's version | SteamTrayWebHelper |
|---|---|---|
| Project status | Archived and deprecated | Maintained continuation |
| Installation | Manual DLL installation | Separate Setup.exe and umpdc.dll downloads |
| Tray appearance | Generic Windows application icon | Live CEF enabled/disabled status icons |
| Tray menu | Basic On and Off choices | Automatic, On, and Off, with active-state checkmark |
| Menu dismissal | A dismissed menu could still write an override value | State changes only after an explicit selection |
| Steam registry use | Manual override reused Steam's RunningAppID value |
Manual override is stored in a private project registry key |
| Menu design | Standard popup menu | Dark owner-drawn tray menu |
| Event architecture | Registry watching occurred inside the WinEvent callback path | Dedicated registry watcher thread keeps event delivery responsive |
| Process detection | WTS enumeration with native process queries | Single Toolhelp snapshot pass with fewer runtime dependencies |
| Build hardening | Compact release build | Explicit ASLR, high-entropy VA, DEP/NX compatibility, and stripped output |
| Distribution | DLL-focused releases | Installer and DLL supplied separately for user choice |
- Custom enabled and disabled tray icons with transparent backgrounds.
- Automatic mode that follows Steam's actual
RunningAppIDstate. - A private override value that does not overwrite Steam's own game-running value.
- Unique command IDs so closing the tray menu cannot silently change modes.
- State-aware tooltips that clearly show whether CEF is enabled or disabled.
- Automatic tray-icon recovery after Windows Explorer recreates the taskbar.
- Native Win32 implementation with no separate runtime or background service.
- An installer with Steam-folder validation and a built-in uninstaller.
Note
Full credit for the original idea and implementation goes to Aetopia. SteamTrayWebHelper builds on that GPL-licensed foundation with substantial interface, distribution, and internal implementation changes.
- Windows 10 or Windows 11
- 64-bit Steam client
- Administrator permission when installing into
Program Files
No separate runtime, account, service, or configuration application is required.
GitHub displays a SHA-256 digest beside each uploaded release asset. You can calculate the downloaded file's digest in PowerShell:
Get-FileHash .\umpdc.dll -Algorithm SHA256For the installer:
Get-FileHash .\Setup.exe -Algorithm SHA256Compare the result with the SHA-256 value shown for the matching file on the latest release page.
- Confirm
umpdc.dllis in the exact same directory assteam.exe. - Fully exit Steam and launch it again.
- Check Windows' hidden notification-area icons.
- Remove any older copy of NoSteamWebHelper before reinstalling.
Right-click the tray icon and select On. Alternatively, close Steam, remove umpdc.dll, and start Steam again.
Adding -silent to a Steam shortcut can prevent the main Steam window from opening automatically when CEF is restored.
"C:\Program Files (x86)\Steam\Steam.exe" -silent
The project loads a DLL from the Steam installation directory and controls Steam child processes. Some security products may flag that behaviour heuristically. Review the source code, build it yourself, and compare the downloaded file's SHA-256 digest with the value displayed by GitHub.
Close Steam, remove umpdc.dll to restore normal operation, and check the Releases page for an updated build.
The project uses the Win32 API and an x86-64 MinGW-w64 UCRT toolchain.
Install MSYS2 and update it:
pacman -Syu --noconfirmOpen an MSYS2 UCRT64 terminal:
pacman -S mingw-w64-ucrt-x86_64-gcc --noconfirmRun these commands from the repository's src directory:
mkdir -p bin
windres res/icon.rc -O coff -o bin/icon.res
gcc -Oz -Wall -Wextra -Werror \
-Wl,--gc-sections,--exclude-all-symbols,--dynamicbase,--nxcompat,--high-entropy-va \
-municode -shared -nostdlib -s \
Library.c bin/icon.res \
-lkernel32 -luser32 -ladvapi32 -lshell32 -lgdi32 \
-o bin/umpdc.dllThe generated DLL will be located at:
src/bin/umpdc.dll
SteamTrayWebHelper/
├── .github/
│ └── workflows/
│ └── build.yml
├── docs/
│ └── images/
│ ├── cef-enabled.png
│ └── cef-disabled.png
├── installer/
│ └── NoSteamWebHelper.iss
├── src/
│ ├── Library.c
│ └── res/
│ ├── icon.rc
│ ├── icon_on.ico
│ ├── icon_off.ico
│ └── make_icon.py
├── LICENSE
└── README.md
src/bin/ and installer/Output/ are generated build-output directories.
The original NoSteamWebHelper concept and implementation were created by Aetopia in Aetopia/NoSteamWebHelper.
SteamTrayWebHelper retains the core idea while adding expanded tray controls, custom status visuals, safer override storage, revised event handling, hardened build flags, and installer/manual distribution options.
Distributed under the GNU General Public License v3.0.