Yes, you can repair UFT 12.01 with the below steps:

Window 7

Press the 'Start' button
Find command prompt and right click on it.
Select ''Run as Administrator''.
A Dos Prompt will appear.
copy the following to the dos prompt and run.

MsiExec.exe /fm {F4562C53-DCB0-4DBF-8A17-7EBF2E5F2DF7}

Windows 8/8.1

From the Charms screen, start typing the word 'Command'. A list of matching programs will appear.
Right click 'Command Prompt'.
Select Run As Administrator.
A Dos Prompt will appear.
Copy the following to the dos prompt and run.

MsiExec.exe /fm {F4562C53-DCB0-4DBF-8A17-7EBF2E5F2DF7}