I lost my authenticator to my tiktok account because I reset my phone is there a way to get it back?

There is no supported way to unlink or recover a TikTok account’s two-step verification from Microsoft Authenticator without signing in to TikTok itself. Microsoft Authenticator only stores and restores the credentials it has backed up; it cannot change settings in third‑party services like TikTok.

From the available information:

1. If the old phone was iOS and still accessible
   • Ensure iCloud backup and Authenticator backup were enabled on the old device:
     • iCloud Drive, iCloud Keychain, and iCloud Backup must be turned on, and Authenticator must be enabled under Saved to iCloud.
   • On the new iOS device:
     • Install Microsoft Authenticator.
     • Use the same Apple ID and iCloud settings, then restore Authenticator data so that one-time password codes for third‑party accounts (like TikTok) become available again.
   • Details for backup/restore behavior:
     • Third‑party accounts that use a 30‑second one‑time password code are backed up and can be restored.
2. If the old phone or its iCloud/backup is not accessible
   • If iCloud (for iOS) or the backup account cannot be accessed, Authenticator account credentials cannot be restored. The guidance is to add the accounts again.
   • For TikTok, that means using TikTok’s own account recovery options (email, phone, or support) to regain access and then reconfigure two‑step verification. Microsoft cannot override TikTok’s security or unlink MFA on TikTok.
3. Cross‑platform limitation
   • Accounts backed up on iOS cannot be restored on Android, and vice versa. If the old device and new device are different platforms, the Authenticator backup cannot be used to recover the TikTok code.

If none of the above paths work (no backup, no access to old device, and TikTok support cannot verify ownership), there is no Microsoft-side method to get the old Authenticator entry back or to disable TikTok’s MFA.

References:

• Back up your accounts in Microsoft Authenticator
• Restore account credentials from Microsoft Authenticator