Microsoft has removed the original download link that UFT's installer used to download the script debugger utility. Here is the KB from HPE along with some suggested workarounds-

During QuickTest Professional (QTP) or Unified Functional Testing (UFT) installation If the option to download and install Microsoft Script Debugger has been selected, the following error message may be displayed:

“Failed to download and install Microsoft Script Debugger: http://download.microsoft.com/download/7/7/d/77d8df05­6fbc­4718­a319­ be14317a6811/scd10en.exe. Please check log file for more information.”

Solution

The link mentioned on pop­up warning/error, is no longer available. Such URL is from Microsoft download site (used to retrive the Microsoft Script Debugg er).

Important: HPE is actively working with Microsoft on this matter.

For the time being, when error appears, click "Ok" to finish installation/configuration. To avoid being affected entirely by lack of such component, use either
of below:

1. Via “Add­in Extensibility and Web 2.0 Toolkits” . This component contains all the required files for UFT debugging functionalities, including files t hat replace the Microsoft Script Debugger. This installation component can be accessed from the HP Unified Functional Testing setup file.
To install the “Add­in Extensibility and Web 2.0 Toolkits”, do the following:
1. Run the HP Unified Functional Testing setup.exe file.

2. Click “Add­in Extensibility and Web 2.0 Toolkits” link in the UFT installation dialog

3. Click the “Extensibility Accelerator for HP Functional Testing (includes HP UFT Web Add­in Extensibility SDK)” link in the pop­up web page. A setup dialog box appears.

4. Follow the instructions in the setup dialog to complete the installation of the Extensibility Accelerator for HP Functional Testing.

2. Via manual registration components from other 3rd party software. For more information, follow steps from Document ID KM02377621 ­ How to update or upgrade Process Debugger Manager?