| Symptom | Likely cause | What to check |
| Selecting “Sign in with Microsoft” does nothing or displays an immediate error | The organisation integration was not completed or was configured for a different Microsoft Entra tenant. | Go to Settings > SSO Providers. Confirm that a provider is configured and check which tenant it is linked to. |
| One staff member cannot sign in, but everyone else can | The staff member’s Microsoft Entra Object ID is missing or incorrect. | Open the staff member’s profile and review SSO Connections. Confirm that a connection exists and that the Subject field contains the correct Object ID. |
| A group of new staff members cannot sign in | Their CareVision profiles were created without SSO connections, or they were omitted from a bulk import. | Review the affected staff members’ profiles. If your organisation used a CSV import, confirm that it was completed and that the affected staff members were included. |
| Staff members in one part of the organisation cannot sign in | Your organisation uses multiple Microsoft Entra tenants, but only some of them have been integrated. | Check how many providers are configured under SSO Providers and identify the tenant used by the affected staff members. |
| SSO worked previously but has stopped working | Something may have changed in your organisation’s Microsoft environment, such as a tenant or policy change, or a Microsoft account may have been disabled. | Ask your organisation’s IT team to confirm what changed and whether the affected Microsoft accounts and access policies remain active. |