I now this is a duplicate post from here, and have asked for that post ot be deleted as I feel this will receive better visibility in a thread of it's own. I have requested deletion of the referenced post above.
Installed and updated Norton Halt - anyone else experiencing the Stagefright Vulnerbility scan showing checking with the progress stopped at halfway thru and never going beyond that?
On Moto X Gen 2, Android version 5.1, Norton Halt version 5.2.0.139 Also have Norton Mobile Security and Norton Identity Safe installed.
Remove and reinstall of Norton Halt did not change the result.
Any help appreciated.
<EDIT>Only way to stop the "Checking" is to find Norton Halt in APPS and Force Stop, then uninstall and reinstall.