The ISSetup.dll or IScript.dll from 2013 is incompatible with Windows 10's security features (Controlled Folder Access, etc.).
The installer is trying to write shortcut paths using an environment variable that Windows 10/11 resolves differently. The ISSetup
Data1.cab is larger than 2GB. Older burning software or faulty downloads truncate the file. Also, some DVD-Rs degrade. Older burning software or faulty downloads truncate the file
For over a decade, Bosch ESI[tronic] has been the gold standard for professional automotive diagnostics, and the 2013 release cycle (Q1, Q2, and Q3) remains a popular "vintage" choice for many independent workshops and hobbyists. Why? It strikes a rare balance: it covers vehicles from the late 90s through 2013 without the heavy telemetry, online activation hassles, or subscription fees of newer versions. If you are still stuck
The 2013 versions share a common Product Code GUID in the registry. Windows thinks an upgrade is in progress.
Windows 10/11 requires driver signing. The 2013 hardlock.sys is unsigned.
If you are still stuck, the MHH AUTO forum has dedicated threads for each error code. Search for: "ESI 2013.1 error 1606 MHH" or "Hardlock code 52 ESI 2013.2" . Hundreds of users have paved the way. Now, go get that install working. This guide is for educational and archival purposes. Respect software licensing agreements. ESI[tronic] is a registered trademark of Robert Bosch GmbH.