TIA Portal V11 Runtime Uninstall 'S7DOS' and 'S7DOS64' Error

Hi all,

I had to install early versions of TIA (V11 and V13) for a training class.  I want to uninstall V11 but the Runtime Advanced will not uninstall.  When attempting to uninstall I get the following error:

Inconsistent order definition for the SetupUnits: 'S7DOS' and 'S7DOS64' in the SEPRO definitions of 'SIMATIC WinCC Runtime Advanced' and 'SIMATIC WinCC Runtime Advanced Simulation'

The specific software I am trying to remove is: SIMATIC WinCC Runtime Advanced V11.0 SP2 SE

The reason I don't just leave it on my system is because anytime I attempt to install Runtime for another version of TIA I get an error that its incompatible with the current Runtime installed, and this V11 is the only one on my machine (example from V18 attached).

Please, any help is appreciated.

Closed cause question posted twice.

The second thread with the subject 'S7DOS' and 'S7DOS64' Error when uninstalling TIA V11 is published within the conference STEP 7 (TIA Portal).