Python activities not working with 64-bit python

I managed to find a solution.

  1. I saved and closed the solution
  2. Opened the Project Dependencies Mass Update Tool
  3. Selected Local and Official and pressed next
  4. Searched for Python, there was only version 1.0.6 there
  5. I ticked include prerelease and the 1.1.6 version showed up
  6. I closed the mass update tool
  7. Opened the project I was working on
  8. Opened Package manager
  9. Now the 1.1.6 was available for the python activity so I updated it and it now works.

I do not know if the mass update tool made the trick or if it was simply closing and opening the project that soleved the issue.