This is a known issue. See HPE KB article KM03079323.

http://support.openview.hp.com/selfsolve/document/KM03079323

Web application hanging due to UFT ActiveX control. Change at registry level.

Workaround fix described in the KB article is to :

1) Close UFT and AUT. Open regedit.

2) Navigate to :

[HKEY_CURRENT_USERSoftwareMercury InteractiveQuickTest ProfessionalMicTestActiveX Add-inProgID]

3) Add new key :

[HKEY_CURRENT_USERSoftwareMercury InteractiveQuickTest ProfessionalMicTestActiveX Add-inProgIDDummy.ProgId]

4) For this new key add new value :

''Trapping''=dword:1

Trapping mode 1 (exclusive) instructs QTP to hook the specified ActiveX only and ignore all other controls.

Since Dummy.ProgId doesn't really exists in their AUT that will instruct QuickTest to inject the ActiveX agent but ignore all ActiveX controls in their AUT.