1. Sign into your Microsoft account on Bungie.net and go to settings. From setting go into Linked Accounts. Link your Facebook account. Sign out of Bungie.net the sign in again but this time sign in using your Facebook account. Go back into the Linked Accounts setting and Unlink your Microsoft account. 2. Once you have unlinked your Microsoft account sign out of Bungie.net, and make a new account using your Microsoft account credentials. The sign back out of the Bungie.net account. 3. Sign back into your Facebook account, and go back into the Linked Accounts settings. From there link your Microsoft account to the Facebook account. After you have successfully linked your Microsoft account to the Facebook account. Go the Grimoire page and your Gamertag should pop up as well as your Grimoire score. Congratulations you are now successfully linked to your Microsoft account! Big ups to SouthMiami88 for finding the method! This was all of his work and I do not take any credit for figuring this out. I am just posting this to the forums for everyone to see, and hopefully everyone can get their accounts linked!