Open Task Manager (Ctrl+Shift+Esc) > End any task related to cheatengine-x86_64.exe , RTSS.exe , or SpecialK64.dll . Then relaunch the game.
Antivirus software may have mistakenly flagged the file as malicious and quarantined it.
Open your antivirus software (e.g., Windows Defender, Avast, Malwarebytes). unable to load library steamclient64dll fixed
The single most common cause of this error is an overzealous antivirus utility blocking the file.
Outdated or broken C++ packages can cause DLL loading failures. Use the Control Panel/Settings to "Modify" and then "Repair" your Visual C++ installations. Open Task Manager (Ctrl+Shift+Esc) > End any task
If you see steamclient64.dll there, select Restore or Allow to bring it back to its original folder. 2. Verify Game File Integrity
Steam will restart, and you will need to log back into your account. Update Graphics and System Drivers Open your antivirus software (e
Run the downloaded installers and select (if already installed) or Install . Restart your computer once the installation finishes. 5. Manually Restore the steamclient64.dll File