W10 Bitlocker Encryption after installing linux mint – Link to find the key

After installing linux mint alongside my w10 partition a few months ago the w10 partition was suddenly encrypted with bitlocker. The reason given was, that the guidelines for the secure boot were unexpectedly changed, and thus the drive got encrypted. Since i did not really need w10 anymore, i didn’t really try to get the key (that i didn’t have written down at the time, since i never manually enabled said encryption).

Now i booted into the w10 partition again.
Here i now saw that below the field where i can enter the key a message tells me to follow a link (looks kinda like this “go.microsoft.com/fwlink/?linkID=XXXXX” with distinct numbers at the end. The text also gives me a Key ID that i should enter in the website that opens with the link.

Now, onto my question: Is this link really where i can find my key? After going through some forums relating to finding a bitlocker key there was no mention of the possibility of the bitlocker screen giving you a link where you might recover your key. Is it possible that this encryption is not at all a bitlocker encryption and maybe caused by malware?