Add the entire C:\Program Files\EVC folder to your antivirus list. For Windows Defender, go to "Virus & threat protection" → "Manage settings" → "Add or remove exclusions" .
When you receive an "Error Load DLL" or "Error start process" message with WinOLS 2.24, it usually means one of three things:
: Do not cut and move the DLL files from the EVC folder to System32. This will break the installation and trigger the DLL error. You must copy them to System32 while leaving the originals in the EVC folder. winols 2.24 error load dll
"Hey guys, I'm getting a when opening WinOLS 2.24. Has anyone run into this before? I've already tried 'Run as Admin' but no luck. Is there a specific patch or C++ redist I’m missing?"
Background software (especially other tuning tools like ECM Titanium or diagnostic software) can hijack DLL calls. Add the entire C:\Program Files\EVC folder to your
If you are a tuner or work with ECU remapping software, encountering the message in WinOLS 2.24 is a common hurdle. This error typically prevents the software from launching or stops specific plugins from working correctly.
Enforce specific administrative parameters to bypass kernel-level execution blockages. This will break the installation and trigger the DLL error
If the error occurs specifically when opening a specific ECU project file (e.g., Bosch EDC16 or Siemens MS43), the individual checksum DLL module is likely corrupted.
Completely uninstall your current installation of WinOLS 2.24.
Corrupted Windows system files can interfere with DLL loading. Run Windows built‑in repair tools to fix system integrity issues.
Because WinOLS 2.24 is legacy software, it was designed for older Windows environments (like Windows XP or Windows 7). Windows 10 and 11 may block certain DLL calls for security.