In the Windows 11 ChatGPT desktop client, historical projects and conversations are unavailable; the user is immediately redirected to the login page.

What version of the Codex App are you using (From “About Codex” dialog)?

26.818.41509

What subscription do you have?

plus

What platform is your computer?

win11 x64

What issue are you seeing?

A problem has arisen with the ChatGPT client (version 26.819.11345, from the Microsoft Store) on my Windows 11 system: After not using the client for two days, August 22nd and 23rd, opening the client on August 24th immediately redirects me to the login page whenever I open the history chat in the project sidebar. This happens every time. Only opening a new chat allows me to use the model, but even then, the login page appears shortly after the chat ends.

I've tried uninstalling and reinstalling the client without deleting the configuration files, and restarting my computer, but these methods haven't resolved the issue. The client works normally on another Windows computer under the same account.

I frequently use network proxy tools and frequently change IP addresses when using GPT; this is my only point of failure, but it worked perfectly before.

What steps can reproduce the bug?

Reproducible on some clients

What is the expected behavior?

No response

Additional information

No response

The report names no repository file, test, or entry point; begin by reproducing the redirect on Windows 11 using the reported app versions and account context. Before implementation, identify the desktop authentication and history path, then define the expected behavior for opening projects and historical conversations without being sent to login.