Whenever I am starting my AEM instance it is showing me the "AuthenticationSupport service missing. Cannot authenticate request."

[monish7]

Please help me to fix this

[aanchal-sikka · Accepted solution]

Hello @monish7 

You would be able to find many threads on AEL on the same issue. Sharing few of them. You would have to check them one by one to understand, whats causing 503 for you

Solved: AEM restart issue. AuthenticationSupport service m... - Adobe Experience League Community - ...

Solved: HTTP ERROR 503 AuthenticationSupport service missi... - Adobe Experience League Community - ...

Solved: 503 error - AuthenticationSupport service missing... - Adobe Experience League Community - 1...

Solved: HTTP ERROR 503 AuthenticationSupport service missi... - Adobe Experience League Community - ...

[monish7]

Thank You So Much @aanchal-sikka, the first solution worked for me from the linkes which you provided.

[BrianKasingli]

From experience, this happens to me when AEM is not closed properly, and my system restarts or shutsdown. Ensure that you close down your AEM environment when you don't have a charger nearby.