Hello hasegawa ranga,
Today's Microsoft 365 outage (MO1550821 / EX1550543) primarily affects Exchange Online/Outlook, Teams, Copilot, SharePoint, and related services (Microsoft Service Health Status). The BitLocker recovery key portal isn't listed as an impacted service, though consumer services are seeing some general degradation today.
- If the recovery key page itself won't load or gives an error: Wait a bit and retry from another browser or device.
- If the page loads normally and says no key is found: That is usually not caused by the outage—it means the key isn't saved under that specific account.
About your key, you can check these locations from another device:
- Personal Microsoft accounts: Go directly to https://aka.ms/myrecoverykeyand sign in with every Microsoft account ever used on the PC—especially the account used when the PC was first set up (on Windows 11 24H2+, the BitLocker screen may show a hint of the linked account). Match the first 8 digits of the Recovery Key ID on your screen.
- Work or school accounts: If a work/school email was ever signed in on the PC, check https://aka.ms/aadrecoverykey (Devices > View BitLocker Keys) or ask your IT admin.
- Offline backups: Check any USB flash drive (for a saved
.txt/key file) or printed copy made when encryption was turned on.
Let me know whether the page is failing to load or loading with no key listed, and we can narrow it down further.