Yes. The thesis trajectory consists of three parts:

- The proprosal

- The final thesis

- The thesis defence

If you fail the proposal or the final thesis, you will be allowed to re-sit these two. It is not possible to re-sit the thesis defence. 

The proposal- and thesis re-sit deadlines vary per MSc programme. For more information you are advised to reach out to your thesis coordinator. The final thesis re-sit deadline for this Academic Year is 15 August for all MSc programmes. 

For an overview of the thesis trajectory, see this article.