# Antigravity Authentication Required Bug **URL:** \ **Category:** Google Antigravity\ **Tags:** bug\ **Created:** [January 25, 2026, 8:45pm UTC](https://discuss.ai.google.dev/t/antigravity-authentication-required-bug/118589 "2026-01-25T20:45:42Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Khang\_Vu](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/khang_vu/32/5022_2.png) [@Khang\_Vu](https://discuss.ai.google.dev/u/Khang_Vu)\ **Post date:** [January 25, 2026, 8:45pm UTC](https://discuss.ai.google.dev/t/antigravity-authentication-required-bug/118589/1 "2026-01-25T20:45:42Z")
![{C14F9C33-F92E-4F23-8DEA-49B800ED2464}](https://d3qe71uytubmmx.cloudfront.net/original/3X/d/a/da400e361403b0a2d88954108a8f199991752069.png) **Environment:** - Antigravity version v1.15.8 - **OS:** Windows 11 Pro **Issue Description:** Despite successfully logging in, I continue to receive the “Authentication Required: Please sign in” prompt. The application fails to recognize the active session. **Troubleshooting Attempted:** I have attempted the following steps, but the issue persists: - **Clean Reinstall:** Uninstalled the application and manually deleted all residual files in: - **Network Changes:** Tested using a 5G mobile hotspot and a VPN (connected to various regions) to rule out IP blocking. - **Security:** Added an exception to my antivirus (Bitdefender). - **Version Check:** Tried reinstalling both the latest version (1.15.8) and several older versions. - **Account:** Attempted to log in using different Google accounts. **Question:** Is this a known global issue, or is there a specific local configuration I might be missing? Any solutions would be appreciated. ---
**Author:** ![Khang\_Vu](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/khang_vu/32/5022_2.png) [@Khang\_Vu](https://discuss.ai.google.dev/u/Khang_Vu)\ **Post date:** [January 29, 2026, 12:23am UTC](https://discuss.ai.google.dev/t/antigravity-authentication-required-bug/118589/2 "2026-01-29T00:23:30Z")
[Solved] It was an Antivirus/Firewall False Positive **The Fix:** I found that my antivirus was blocking the specific language server executable, not just the main app. I added an exception/exclusion for the following file: `%LocalAppData%\Programs\Antigravity\resources\app\extensions\antigravity\bin\language_server_windows_x64.exe` Important Note: Just adding an exception for the main application (`%LocalAppData%\Programs\Antigravity\Antigravity.exe`) is not enough; you must allow the language server executable directly. ---
**Author:** ![Abhijit\_Pramanik](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/abhijit_pramanik/32/32083_2.png) [@Abhijit\_Pramanik](https://discuss.ai.google.dev/u/Abhijit_Pramanik)\ **Post date:** [January 29, 2026, 7:42pm UTC](https://discuss.ai.google.dev/t/antigravity-authentication-required-bug/118589/3 "2026-01-29T19:42:10Z")
Hello @Khang_Vu, We appreciate you following up to confirm the resolution. It is good to know that the login flow is functioning correctly for you now. If you encounter any further issues, please do not hesitate to reach out. ---
**Author:** ![neoacevedo](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/neoacevedo/32/33240_2.png) [@neoacevedo](https://discuss.ai.google.dev/u/neoacevedo)\ **Post date:** [February 10, 2026, 4:37pm UTC](https://discuss.ai.google.dev/t/antigravity-authentication-required-bug/118589/4 "2026-02-10T16:37:10Z")
I’m in openSUSE TW, yesterday I upgraded the OS and the applications, including Antigravity to the version 1.16.5. Today I opened the application and it remains to ask for login despite I have succesfully logged in. ---
**Author:** ![Drfirst](https://d1dlmcr85iqnpo.cloudfront.net/user_avatar/discuss.ai.google.dev/drfirst/32/110014_2.png) [@Drfirst](https://discuss.ai.google.dev/u/Drfirst)\ **Post date:** [March 29, 2026, 7:07pm UTC](https://discuss.ai.google.dev/t/antigravity-authentication-required-bug/118589/5 "2026-03-29T19:07:04Z")
### Solution: Resetting the ‘User’ Configuration Folder 1. **Close Antigravity IDE:** Ensure all processes are completely terminated via Task Manager if necessary. 2. **Locate the Configuration Directory:** Open File Explorer and navigate to the following path: 3. **Backup or Delete the ‘User’ Folder:** 4. **Restart the IDE:** Antigravity will automatically regenerate a clean `User` folder upon startup, which should resolve the “command not found” and Git initialization issues