INSTALL.13 Problems Installing .NET v3.5

Symptom

Sometimes problems are experienced when installing the Microsoft Framework .NET v3.5 (dotnetfx).

Solution

Without looking in-depth at the exact problems possible (usually when v2.0 is installed without v2.0 SP1), at least the following general advice (based on a number of Internet searches) can be given: in case of problems consider as a last resort to run a “clean-up” utility to first delete all versions of dotnetfx (search the Internet for “clean-up dotnetfx”). Afterwards install in sequence .NET v2.0 SP1, v3.0 SP1 and then v3.5. The reason behind this sequence is that v3.5 is dependent on prerequisite functionality included in v3.0 SP1, and that version is dependent on perquisite functionality included in v2.0 SP1.