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Steam Client Troubleshooting
What should I do if Steam is crashing, not opening correctly or closing immediately after launching?
Due to the wide variety of custom hardware and software configurations, Steam crashes may be caused by many factors. The troubleshooting steps outlined in this article are aimed at making sure that your Steam installation and computer environment are both in a good state, so that Steam can work as intended.
There are occasions when crashing issues are not necessarily related to user configurations. These crashes need to be addressed by Steam developers through client updates. We automatically sample and collect crash dumps from affected users, so that fixes can quickly be added through Steam updates.
If you're working with Steam Support, they may also ask you to provide more information or perform tests that can narrow down the cause of the issue.
You can always download the latest version of the Steam client application directly from Steam.
Basic Steam Troubleshooting
The following steps will ensure that your Steam installation is in a good state. These can be performed with a minimal amount of technical knowledge.
As obvious as it sounds, it's always a good first step to make sure that you restart Steam as well as your computer.
Restarting the computer flushes all kinds of system states and caches, while also resetting other programs and releasing locks on files and other resources.
The Steam installer can be downloaded here: (http://store.steampowered.com/about/) and reinstalled to the same location where it is already installed.
This may fix potential issues with Steam client and service files. Installing into same location will preserve all installed games.
WARNING! Uninstalling Steam through any other method will delete all game and userdata content.
If the issue is still occurring after following the steps outlined above, it is possible that something outside of Steam is responsible.
Because these advanced troubleshooting steps may be unique to your specific computer configuration, we highly recommend that you contact a local IT support specialist in your area for further assistance completing them.
Remove External Devices
It is possible that an external device is causing Steam to not work correctly. External input devices require specific drivers that can interfere with Steam. We recommend unplugging all non-essential input devices from your computer to eliminate the possibility that they are interfering.
Refresh Local Network Hardware
This includes restarting all modems & routers. Network hardware can get into slow/broken state after running for a long time. This can cause the update/login process of launching Steam to fail silently or crash.
Update OS & Drivers
Make sure your operating system and all hardware drivers are up to date.
For Windows: Start → search "update" → run "Check for Updates"
For Mac: drivers cannot be updated separately; only the operating system can be updated.
Investigate Anti-Virus Software
AV software hooks very deep into user systems and can affect disk and network operations which will cause issues with Steam. Some games also use copy protection technology that can appear as malicious software to an AV scanner, resulting in potential false-positive alerts.
You'll want to work with a specialist to ensure that your AV software is not interfering with Steam. You may even need to temporarily disable it for testing purposes. It may also be necessary to add exceptions for Steam in your AV configuration.
Investigate Other Programs & Services
Any software that modifies or monitors system, disk or network activity can cause issues when trying to launch Steam. These programs and services can run in the background and are typically associated with software like Anti-Virus, ad-blockers, web-optimizers, firewalls, system cleaners, recording software, proxies, performance boosters etc.
You'll want to work with a specialist to ensure that these services & programs are not interfering with Steam. You may even need to temporarily disable them for testing purposes.
Certain firewalls may prevent Steam from talking to its servers. You'll want to work with a specialist to ensure that the Firewall is not interfering. You may even need to temporarily disable it for testing purposes. It may be necessary to add exceptions in your firewalls for Steam if you discover that this is the cause.
Some users overclock their hardware to gain more performance while running their system outside of manufacturer recommended settings. This can cause memory and file corruption and should be disabled (usually in the computer BIOS).
Test Online Connection
Some Internet providers cache or compress online data to save bandwidth (especially cellphone networks). This can cause issues with Steam. It is a good idea to test the issue by connecting to an entirely different network, preferably from a different internet service provider (ISP).
Check Hard Drive for Errors
All storage drives/devices can be affected by file corruption, especially if it is older or running under a heavy load. You'll want to work with a specialist to investigate possible issues with your Hard Drive.
For Windows: My PC → Right Click on Drive → Properties → Tools → Error checking
For Mac OSX: Disk Utility → Click on Drive → Click First Aid (For older OSX versions: click Repair Disk Permissions)
Check RAM for Errors
Memory errors can cause issues with the Steam installation process, as well as gameplay. You'll want to work with a specialist to investigate possible issues with your system memory.
Windows : Start -> Find "mdsched" and run Windows memory Diagnostic