Error 997. Overlapped I/O Operation is in Progress (Installing AutoCAD or F/X CAD)
Issue
When trying to install AutoCAD or F/X CAD, you saw the following error message:
Error 997. Overlapped I/O operation is in progress.
Cause
A Windows security setting is likely preventing your AutoCAD product from installing.
Solution
Step 1:
Follow the appropriate steps for the version of CAD you're attempting to install:
F/X CAD users
Trying to install F/X CAD? Download, unzip and run our Installer Registry file.
AutoCAD users
Trying to install AutoCAD (not F/X CAD)? See the official Autodesk solution to this issue.
Step 2:
1. Run an elevated command prompt
2. Run an SFC scan by typing sfc/scannow and pressing Enter.