What you were trying to update when you found it? If you're seeing a specific error message ?

: Once extracted, look for .exe or .bat files you don't recognize; these are higher risk than simple data or .sys files. To provide more specific help, do you know: Where you downloaded the file from?

While "LRCDSYS" is not a standard Windows component, it is often found in:

: Right-click the file and run a scan with your security software.

: A go-to choice for Mac users who need to handle RAR archives. Is it Safe?