Symmetries and M-theory-like Vacua in Four Dimensions

Non-geometric flux vacua have recently been revisited, leading to the remarkable discovery of isolated 4D $\mathcal{N}=1$ supersymmetric Minkowski vacua. These constructions rely on the non-renormalization of the superpotential, which is supported by heuristic arguments. Given the significance of verifying the existence of these isolated M-theory-like vacua, we present alternative symmetry-based arguments that arrive at the same conclusion. Additionally, we leverage these symmetries to argue for the existence of unstable dS solutions as well as supersymmetric AdS solutions.