Forum Discussion
The GPT 5.5 Think Deeper Model on Copilot is not responding
I have tried all possible troubleshooting methods to correct this issue but the GPT 5.5 Think Deeper model seems to not be working and the Microsoft Support team also was not able to provide any help on this issue. Can you suggest what possible issue it could be at my end and how to fix the same and this issue is being faced by everyone on my Microsoft 365 License
Everytime I ask for a response from GPT 5.5 Think Deeper model I am getting the error message
"
Sorry, I wasn't able to respond to that. Is there something else I can help with?
"
And these are for AI commands that it had been responding properly before
1 Reply
Because Think Deeper fails for every licensed user and previously worked, this points to a tenant or service-path problem, not one browser or workstation. Ask a Microsoft 365 administrator to check Health > Service health and the Message center for Copilot advisories. Then use Support > Help and support to run the Copilot service-plan diagnostic for one affected account, confirming the required service is enabled. Compare the same prompt in standard Copilot chat and Think Deeper, using both the web experience and Microsoft 365 Copilot app. Record the UTC failure time, tenant, affected user, selected model, client, region, and any correlation or session identifier. Do not keep changing licenses if the diagnostic reports them correctly. If only Think Deeper fails across clients and accounts, open a Microsoft support case with those results and request service-side investigation. There is no documented local setting that repairs one model for an entire tenant.
