Why can't I install RealFlight 8 online updates?

Some RealFlight 8 owners have been unable to download and install online updates successfully due to virus protection that's active during the attempted update. Please read the following two articles carefully to see if either describes your situation. If so, try the solution provided.

• How do I correct online update installation error KEError 21081?
• How do I correct online update installation error KEError 24052?

Don't attempt a solution if you're not sure about the cause. That could just make the problem worse. Unfortunately, we can't provide exact instructions for your specific antivirus software. You may need to refer to its documentation for further assistance.