Which variant of Movie Edit Pro, ie Basic Plus or Premium and what is the version number you are trying to 'update' as found under Help, About.
Do you mean update as in applying a patch or upgrade as in moving up one relase to another, eg from Movie Edit pro 2019 to 2020 or installing the extra content?
You have posted to the forum for Magix Video products, with a question about Sound Forge. Hence, this is the wrong forum area and your post has been hidden.
Please repost to the Audio area of the forums, making sure to choose Sound Forge as your product.