IBM Support

IIS presenting 503 service is unavailable and invalid login response

Troubleshooting


Problem

Configuring IIS with HTTP, SSO and using Active Directory users are experiencing two errors: 
503 service is unavailable 
Invalid login response

Symptom

Two errors: 
503 service is unavailable 
Invalid login response

Document Location

Worldwide

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Document Information

Modified date:
14 January 2026

UID

ibm16415843