This is the #1 culprit. Dodi repacks are often split into multiple parts (e.g., part01.rar, part02.rar). If you are missing a part, or if one part downloaded with an error, the CRC check will fail, triggering Code 12.
You have tried all nine fixes. Error Code 12 still appears. Accept that something is fundamentally wrong. dodi repack error code 12
Safe Mode loads Windows with minimal drivers and no third-party background apps. This prevents antivirus interference and frees up system resources. This is the #1 culprit
If all else fails, the original archive set you downloaded might have been uploaded corrupted. This is rare but happens. You have tried all nine fixes
To fix the problem, you need to know the root cause. Here are the five most common reasons users see Error Code 12:
When installing a Dodi repack (which typically uses a customized version of Inno Setup), the process halts abruptly with a message referencing "Error Code 12."
In the context of Inno Setup installers, this is almost exclusively a File Access Error. It means the installer attempted to unpack a file to your hard drive but was denied permission, could not find the destination, or was blocked by security software.