This post addresses two different problems with similar causes. Please read each problem description very carefully before taking any action. Applying the incorrect solution for your particular problem could make things worse.
PROBLEM #1:
An online update attempt failed partway through. Subsequent attempts to update result in "KEError 21081: The requested functionality is not available."
SYMPTOMS:
AFFECTS:
Users who attempt an online update with antivirus software active.
SOLUTION:
Unquarantine the file(s) listed above, then try the online update again. Note: Next you may experience KEError 24052. If so, please skip down to the Problem #2 section!
PREVENTION:
Please either disable all antivirus software during online updates in the future or add exceptions for the files/directories above as appropriate, depending on your level of comfort and technical knowledge. Please understand that we are not in a position to provide exact instructions for your specific antivirus software. You may need to refer to its documentation for additional assistance.
PROBLEM #2:
An online update attempt failed partway through. Subsequent attempts to update result in "KEError 24052: Unrecognized online update method."
SYMPTOMS:
AFFECTS:
Users who attempt to update from version 8.00.013 with antivirus software active. (Do not follow these steps if you were running a more recent version than 8.00.013 prior to the error. This fix is not designed for you.)
SOLUTION:
Once you have followed the solution steps above and are no longer running version 8.00.013, you should never find yourself in this exact situation again. If antivirus software quarantines the above files in the future, simply removing them from quarantine and retrying the update should work. Note that reinstalling RealFlight 8 could land you back here if you don't take steps to avoid the problem as described below, however.
Please either disable all antivirus software during online updates in the future or add exceptions for the files/directories above as appropriate, depending on your level of comfort and technical knowledge. Please understand that we are not in a position to provide exact instructions for your specific antivirus software. You may need to refer to its documentation for additional assistance.
PROBLEM #1:
An online update attempt failed partway through. Subsequent attempts to update result in "KEError 21081: The requested functionality is not available."
SYMPTOMS:
- You receive KEError 21081 when you try to update RealFlight.
- One or both of the following files is missing from your computer:
C:\Program Files (x86)\Common Files\KnifeEdge\CopyLaunch8.exe
C:\Program Files (x86)\Common Files\KnifeEdge\LauncherHelper8.exe - You have antivirus software such as McAfee, Bitdefender, or Trend Micro running on your computer and providing some type of real-time/heuristic protection.
AFFECTS:
Users who attempt an online update with antivirus software active.
SOLUTION:
Unquarantine the file(s) listed above, then try the online update again. Note: Next you may experience KEError 24052. If so, please skip down to the Problem #2 section!
PREVENTION:
Please either disable all antivirus software during online updates in the future or add exceptions for the files/directories above as appropriate, depending on your level of comfort and technical knowledge. Please understand that we are not in a position to provide exact instructions for your specific antivirus software. You may need to refer to its documentation for additional assistance.
PROBLEM #2:
An online update attempt failed partway through. Subsequent attempts to update result in "KEError 24052: Unrecognized online update method."
SYMPTOMS:
- You receive KEError 24052 when you try to update RealFlight.
- You may have tried the Restore Defaults option or even uninstalling and reinstalling the software, without improvement.
- One or both of the following files is missing from your computer:
C:\Program Files (x86)\Common Files\KnifeEdge\CopyLaunch8.exe
C:\Program Files (x86)\Common Files\KnifeEdge\LauncherHelper8.exe - You have antivirus software such as McAfee, Bitdefender, or Trend Micro running on your computer and providing some type of real-time/heuristic protection.
AFFECTS:
Users who attempt to update from version 8.00.013 with antivirus software active. (Do not follow these steps if you were running a more recent version than 8.00.013 prior to the error. This fix is not designed for you.)
SOLUTION:
- Exit all RealFlight software, including the Launcher.
- Download this manual 8.00.019 update (50 MB).
- Run the downloaded installer and follow the prompts. It will update you to version 8.00.019, which as a byproduct will fix your problem.
Once you have followed the solution steps above and are no longer running version 8.00.013, you should never find yourself in this exact situation again. If antivirus software quarantines the above files in the future, simply removing them from quarantine and retrying the update should work. Note that reinstalling RealFlight 8 could land you back here if you don't take steps to avoid the problem as described below, however.
Please either disable all antivirus software during online updates in the future or add exceptions for the files/directories above as appropriate, depending on your level of comfort and technical knowledge. Please understand that we are not in a position to provide exact instructions for your specific antivirus software. You may need to refer to its documentation for additional assistance.