So this is my first attempt at a UDF so apologies if it is terrible or if this has been posted before. I've seen this question asked a few times and as of yet, I dont think there's a way to do this in Autoit3, so i've had to implement the use of an externally made program. This requires the presence of the nircmd.exe tool in the C:\windows folder, this may be obtained here: http://www.nirsoft.net/utils/nircmd.html Once this has been inserted, you should be able to use the UDF: SetVo