Hi i asked the same question for my new msi modern ,and am still waiting for a reply, i did have a MSI laptop a couple of years ago
and added a extra disk at that time MSI answered HI Kevin,Adding an SSD doesnñt void the warranty.
but as i say that was with my last laptop.
i also am in Denmark.
Hi this is the answer I got today from support Ticket:
Dear Kevin Pearson
Install additional memory module or SSD drive is allowed. Removing warranty sticker doesn't change anything in case of warranty rules, it is put just for informational purposes only, but please be aware that all damages connected with dismount computer or exchange any key components is not covered by warranty.