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NKrN2 1 月 16 日 下午 10:56
Steam Won’t Open – Only Shows in Task Manager
Hey everyone,

I’ve been struggling with a weird Steam issue, and I’m hoping someone here might have a fresh idea. It all started with this error:
"steamwebhelper, a critical Steam component, is not responding. The Steam UI will not be usable. Click here for more information."

That completely broke Steam, and I couldn’t use it at all. But while trying to fix that, a new problem popped up. Now, when I launch Steam, nothing happens – no window, no UI, nothing. It only shows up as a process in Task Manager.


Here’s what I’ve tried so far (feels like almost everything):
- Restarted my PC (obviously).

- Fully uninstalled Steam using tools like Revo Uninstaller to clean out leftover files and registry stuff.

- Re-downloaded and reinstalled Steam from the official site.

- Deleted the appcache folder from the Steam directory.

- Made sure Windows is completely up to date.

- Ran Steam as an administrator.

- Disabled my firewall and antivirus.

- Booted into Safe Mode (with networking).

- Disabled unnecessary apps and services using msconfig and Task Manager.

- Created a new Windows account to check if it was profile-related – same issue.

- Uninstalled and reinstalled my GPU drivers.

- Ran system repair commands like:
sfc /scannow
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth

- Checked the Event Viewer logs, but I don’t know enough to fully understand them, and I couldn’t find anything helpful.

- Cleared leftover Steam files from %localappdata% and %appdata%.

- Disabled fullscreen optimizations and ran Steam in Windows 8 compatibility mode.


Honestly, I’m out of ideas. Has anyone else had this problem or something similar? I’d really appreciate any tips or suggestions. Thanks a ton!


Note :
English isn’t my first language, so I used AI to help with writing and translation. Thanks for understanding
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Akumaryu 1 月 20 日 上午 1:33 
Same issue here and seeing the post popping up in the recent times it could be related to a late steam update. I will switch to the beta branch and hope this helps
#1
Armorip 1 月 20 日 上午 6:28 
It sounds like you've tried many common solutions, but here's a quick checklist of additional things to try:

1. **Delete Steam's `steamwebhelper` Files**:
- Go to your Steam folder and delete `steamwebhelper.exe` and `steamwebhelper64.exe` (if they exist). Then restart Steam.

2. **Try Launching in Offline Mode**:
- Find the Steam shortcut, right-click, and select **Properties**. In the "Target" field, add `-offline` after the Steam path (e.g., `C:\Program Files (x86)\Steam\steam.exe -offline`). This might bypass the UI issue.

3. **Check for Conflicting Programs**:
- Make sure no other software (like VPNs, system optimizers, or other game clients) is interfering with Steam. Disable them temporarily.

4. **Update Graphics Drivers**:
- Even though you've reinstalled them, sometimes using a **clean install** option in the graphics driver software (like Nvidia or AMD) can help resolve hidden issues.

5. **Check for Windows Updates**:
- Ensure your system is up-to-date with the latest updates from **Microsoft**, as it could affect Steam's ability to run properly.

If none of this works, **try using Steam's beta client**. You can enable the Steam Beta by going to **Steam Settings > Account > Beta Participation**.

If this was useful, I'd really appreciate your support!:luv:
#2
Kinky Cat 9 月 25 日 下午 3:30 
I've had exactly the same issue and found the solution.
After I've noticed that my Holo VPN also stopped loading, just endless connection, I knew it's somehow related to Steam.
You need to restart bbr v2 TCP parameters.
I just pasted this into Command Prompt and problem solved:

netsh int ipv6 set global loopbacklargemtu=disable
netsh int ipv4 set global loopbacklargemtu=disable
#3
NKrN2 18 小时以前 
引用自 Kinky Cat：
I've had exactly the same issue and found the solution.
After I've noticed that my Holo VPN also stopped loading, just endless connection, I knew it's somehow related to Steam.
You need to restart bbr v2 TCP parameters.
I just pasted this into Command Prompt and problem solved:

netsh int ipv6 set global loopbacklargemtu=disable
netsh int ipv4 set global loopbacklargemtu=disable
Yes—the fix that worked for me is similar; it’s related to the internet congestion control algorithm. I’m sharing it in case it helps anyone who had the same issue I did.

In PowerShell, run:
netsh int tcp set supplemental internet congestionprovider=ctcp

If it doesn’t help and you want to revert to the previous algorithm, run:

netsh int tcp set supplemental internet congestionprovider=none


This didn’t just fix my Steam issue—it also resolved a problem I had with GeForce Experience launching.
#4
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发帖日期： 1 月 16 日 下午 10:56
回复数： 4
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