To remove password from 7zip file you can take help of Enstella 7z Password Recovery Software software. It is always safe as well as works with every version of Windows. Users can use it easily and they do not face any kind of problem, so I would like to advise you to use this software for any character combination like alphabetic, numeric special characters etc. without losing any data, so you can download this software from the link given below, that too absolutely free.

INFO;-Remove password from 7zip file