The 2013 versions share a common Product Code GUID in the registry. Windows thinks an upgrade is in progress.
Users attempting to install Bosch ESI[tronic] 2013/1, 2013/2, or 2013/3 frequently encounter fatal errors preventing successful setup. The problem is not random but stems from a combination of , incomplete or corrupted downloads (common in forum-shared builds), broken database indexing , and dependency conflicts between the three version releases. The 2013 series is particularly problematic because it represents a transitional period for Bosch’s software architecture.
The ISSetup.dll or IScript.dll from 2013 is incompatible with Windows 10's security features (Controlled Folder Access, etc.).