Checklist

• I have searched the existing issues for similar issues.
• I added a very descriptive title to this issue.
• I have provided sufficient information below to help reproduce this issue.

Summary

Dear Streamlit Team,

I recently experienced an issue using the st.login function with MS Entra as identifiy provider:

A user could not login, although the SSO was successful and a auth code was returned from the provider.
We noticed that the issue was that the st_user cookie could not be set.

Taking a closer look we figured that the cookie size was above the browser limit (somewhat 4 kb), hence no cookie could be set and the st.login was unsuccessful.

We notices that the was member of > 50 AD Groups which all belonged to that app, which are all stored in the cookie causing the exceeding size.

From my perspective there should at least be a warning, or error message, if cookie size becomes too large.

Thank you,
Jonathan

Reproducible Code Example

Steps To Reproduce

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Expected Behavior

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Current Behavior

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Is this a regression?

• Yes, this used to work in a previous version.

Debug info

• Streamlit version:
• Python version:
• Operating System:
• Browser:

Additional Information

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