Steam
Steam client errors, download and update problems, and games that will not start from Steam.
- Steam "Disk write error" when updating a game: how to fix itSteam shows "disk write error" when it cannot write or rename a file in the game folder during an install or update. Start with the gentle fixes: restart, repair the library folder and verify the game files. If that fails, look at antivirus, folder permissions, an empty 0 KB file for the game and the health of the drive.
- Steam error code E87: how to fix the login errorE87 is a Steam sign-in failure: the client says there was an error logging you in, even when your password is right. Valve does not document the code, so every fix here is community-reported. Start by checking whether Steam itself is down, then restart, rule out your network, and try the repair command.
- Steam error code -118: "Unable to connect to server" and how to fix itSteam error -118 means the Steam client could not reach Steam's servers, so the Store, Community or Library page stays blank. Valve has no official article for it. Common fixes are checking for an outage, restarting your router, pausing a VPN and allowing Steam through the Windows firewall.
- Steam error code -105: "Unable to connect to the server" and how to fix itSteam error -105 means the client's built-in browser could not reach Valve's servers, which in practice is usually a DNS name-resolution failure. Clear the web browser cache, flush DNS and, if needed, switch DNS servers. Valve has no page on this error, so these fixes come from a community guide.