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System says DIFxAPI is missing, reinstall does not help. What to do?

DIFxAPI is a library that helps apps to manipulate drivers. Recent versions of Windows are shipped with it included, for older versions you have to install it separately.

Take this archive and extract difxapi.dll from the appropriate archive folder (x86 or x64) which corresponds to your system version (32bit or 64bit) and put it into Windows\System32 folder, then start Daihinia Control App again.

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