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An "illegal operation" is a general computer error indicating a program tried to perform an action that the system cannot process. This is not a legal term but a technical one, and it often occurs due to bugs in the program's code, conflicts with other software, or hardware issues like a faulty memory chip. The error can cause the offending program to close unexpectedly, potentially leading to data loss.

How it works: When a program runs, it sends instructions to the computer's processor. An "illegal operation" error occurs when the processor receives an instruction it doesn't recognize or cannot execute properly. The operating system may then stop the program to prevent further instability.

What to do

Restart the program or computer: Sometimes, a simple restart can resolve the issue.

Update software and drivers: Ensure both the application and your operating system's drivers are up to date.

Close other programs: Try closing any other open applications to rule out software conflicts.

Check for hardware issues: Run memory diagnostics or other hardware checks to see if a faulty component is the cause.

Scan for malware: Use antivirus software to scan for and remove any viruses that may be causing the problem.