Windows 11 Insider Build 26200: ChatGPT Desktop continuously flickers before login, renderer remains alive (OpenAI.Codex 26.715.7063.0)
What version of the Codex App are you using (From “About Codex” dialog)?
26.715.7063.0 (Microsoft Store - OpenAI.Codex)
What subscription do you have?
ChatGPT Team
What platform is your computer?
Windows 11 x64 Insider Dev Build 26200
What issue are you seeing?
Summary
The ChatGPT Desktop application continuously flickers immediately after launch and never becomes usable.
The login screen repeatedly refreshes, while the left sidebar and the main content area repaint independently at different frequencies.
The application never crashes, and all renderer processes remain alive.
This issue occurs every time the application starts.
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Environment
- ChatGPT Desktop (Microsoft Store)
- Package: OpenAI.Codex
- Version: 26.715.7063.0
- Windows 11 Insider Dev Build 26200
- NVIDIA RTX 4070 Laptop GPU
- Microsoft Edge WebView2 installed
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Expected behavior
The desktop application should display the login page normally and allow user interaction.
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Actual behavior
- Window continuously flickers.
- Sidebar and main content repaint independently.
- Login screen is never usable.
- Application remains running.
- No crash dialog appears.
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Troubleshooting already performed
- Reinstalled ChatGPT Desktop.
- Removed all application cache.
- Removed package data.
- Verified Microsoft Edge WebView2 installation.
- Disabled GPU rendering using
--disable-gpu. - Checked Windows Event Viewer (no crash logs).
- Captured ProcMon logs (no ACCESS DENIED or abnormal failures).
- Verified CPU usage is normal.
- Verified GPU usage is normal.
- Verified all ChatGPT renderer processes remain alive.
- Verified process IDs remain unchanged over time.
- Browser version of ChatGPT works normally.
- Microsoft Store works normally.
- VS Code and other Electron/Chromium applications work normally.
---
Additional observations
This issue started after the recent ChatGPT Desktop update in July 2026.
Based on extensive troubleshooting, this appears to be a compatibility issue between ChatGPT Desktop version 26.715.7063.0 and Windows 11 Insider Dev Build 26200 rather than a local system configuration problem.
What steps can reproduce the bug?
- Start Windows 11 Insider Dev Build 26200.
- Launch ChatGPT Desktop (OpenAI.Codex 26.715.7063.0).
- Wait for the application to initialize.
- Observe that the login page immediately begins flickering.
- The sidebar and main content continue repainting indefinitely.
- The application never becomes usable.
What is the expected behavior?
The ChatGPT Desktop application should open normally, display the login page once, and remain stable without any UI flickering.
Additional information
Additional diagnostics performed:
- Renderer processes remain alive.
- Process IDs remain unchanged.
- No renderer recreation observed.
- CPU usage remains stable.
- GPU usage remains stable.
- Event Viewer shows no application crash.
- ProcMon shows no permission or file access failures.
- Disabling GPU acceleration does not resolve the issue.
Screen recording demonstrating the issue is attached.
If needed, I can also provide:
- ProcMon trace
- PowerShell diagnostic logs
- Additional system [information[](url)](
ChatGPT_Developer_Diagnostic_Package.zip
ChatGPT_BugReport_Attachment_Pack.zip
https://github.com/user-attachments/assets/2d54ad63-85d7-41c9-9799-4878bf3e34b0
5 Comments
Potential duplicates detected. Please review them and close your issue if it is a duplicate.
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i have the exact same issue . win 11 rtx 5090 latest version OpenAi.Codex , latest nvidia studio driver
I can also reproduce this on ChatGPT Desktop 26.715.52143 (Microsoft Store).
The issue still exists after updating from 26.715.31925 to 26.715.52143.
Likely root cause found:
deactivated_workspaceaccount-bootstrap retry loop (not GPU)Hit identical symptoms on stable Windows 11 25H2 (26200.8875, Intel UHD Graphics): main window flickers continuously / flashes black, sidebar stuck on skeleton placeholders, Settings > log out does nothing. Web ChatGPT and ChatGPT Classic worked fine on the same machine. Affected app versions here: 26.715.7063.0, 26.730.8199.0 and 26.803.5235.0 (updating did not help).
None of the usual suspects changed anything:
--disable-gpu,--disable-direct-composition, Windows transparency effects off, reinstall, Store update. Since the original reporter has an RTX 4070 and this machine is Intel iGPU-only, the GPU was never the common factor.The desktop logs (
%LOCALAPPDATA%\Packages\OpenAI.Codex_2p2nqsd0c76g0\LocalCache\Local\Codex\Logs) show what is actually happening:This block repeats 15-20 times per second for the whole session (11,801 hits in one 13-minute log; every flickering session shows thousands). The signed-in account's Business workspace had lapsed billing, and the backend blanket-402s every request in that state (same server-side behavior as #16292). The app retries the account bootstrap forever and every retry repaints the UI, which renders as the endless flicker. Because every backend call fails, the logout control is dead too, so users are stuck.
Workaround that fully fixed it:
%USERPROFILE%\.codex\auth.jsonand%LOCALAPPDATA%\Packages\OpenAI.Codex_2p2nqsd0c76g0\LocalCache\Roaming\Codex\web(rename, don't delete, so it's reversible).Result: zero
deactivated_workspacehits in a 2-hour session afterwards, no flicker, app fully usable.Suggestion for the fix: when account bootstrap receives
deactivated_workspace/ HTTP 402, break the retry loop and show an actionable error or workspace switcher instead of repainting indefinitely. This may also explain #34219 and #34299 for users whose Team/Business workspace lapsed while a personal subscription stayed active.Thanks, that worked.
Renaming the cached auth/session files fixed the blinking issue.
Hopefully this can serve as a temporary workaround for others too.