| Description: | Magnetic fields potentially play an important role during massive star-formation (MSF), especially in stabilizing disks and launching outflows. Currently, the only information on the magnetic field in the dense regions close to protostars comes from maser observations. Much of the work has been focused on OH and water maser observations. Recently it has been shown that methanol masers, the most abundant of the MSF maser species, are also excellent probes of the magnetic field. I will here present the results of recent Effelsberg, MERLIN and EVN observations that indicate energetically dominant and large scale ordered fields in the majority of MSF regions. This includes the detection of magnetic field regulated infall on the massive protostellar disk of Cepheus A HW2.
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