Recommend trying applying the UFT 12.53 Install Guide page 15

Upgrade with API tests
If you plan to run tests of a Web Service using security created using Service Test or UFT 11.53 or earlier, you must have the .NET Framework 3.5, WSE 2.0sp3 package, and WSE 3.0 package installed on your computer.

These prerequisites are not provided with the UFT installation. If they are not installed on your computer, you can install them from the following locations on the DVD:

NET 3.5 Framework DVD/prerequisites/dotnet35_sp1/donetfx35_sp1.exe
WSE 2.0 sp3 DVD/prerequisites/wse20sp3/MicrosoftWSE2.0SP3Runtime.msi

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