| Symptom | Why it happens | What to do |
| Invalid Company Code | Wrong code entered | Confirm with admin or check onboarding mail. |
| Wrong email/password | Typo / old password | Use Forgot Password. |
| Microsoft login not working | SSO/MFA policy misaligned | Clear cookies, try incognito, or contact IT admin. |
| Verification email missing | Spam/junk filters | Check spam or request resend. |
