Problem: TestComplete fails to recognize UI objects (e.g., MsgBoxWindow.OKPB) in a desktop application after a recent Windows security update.
Recent Change: Security patch KB5055519 was installed last week. No changes to TestComplete version (currently using 15.72.60).
Impact: Even recorded scripts now fail with object identification issues.
Environment:
DPI settings confirmed correct.
All required services and SmartBear extensions are running.
Desktop application under test.
Tested on same machine/environment before update — worked fine.
Next Steps Tried:
Verified mapping and aliases.
Ran existing and new scripts — same failure.
Attempted re-identification of objects — not found at runtime.
Champion Level 3Hi Vijay,
When you say "DPI settings confirmed correct.", you need to be specific as to what settings DPI is at!
Have you used Object Spy tool to identify UI controls?
What does Object Browser show for your application?
Have you read through https://support.smartbear.com/testcomplete/docs/general-info/configuring/windows-specifics.html ?
