How to fix Lost conversation history in Antigravity early update app?

Many users on the latest Antigravity (AG) early update reported that their conversation history suddenly vanished. On Windows 11 (including WSL2 users), only a couple of old threads appear, or the app even shows “not supported” after installing a December build.

How to fix Lost conversation history in Antigravity early update app?

The issue shows up after updating to AG 1.18.x: the side panel shows zero or only a few very old conversations, and reopening the app doesn’t help. Multiple users on Windows 11 (25H2), some using WSL2, confirmed the loss, with one noting that selecting a workspace folder temporarily restores history. Another noted that older December builds throw an “app is not supported anymore” notice and force an update.

Versions reported:

• Antigravity 1.18.3 / 1.18.4
• VSCode OSS 1.107.0, Windows 11 25H2
• Repro: quit and reopen AG, history gone; only 2-month-old items remain.

Solution Overview

How to fix Lost conversation history in Antigravity early update app?

Step-by-Step Solution

Solution 1 — Downgrade to 1.16.5, verify history, then upgrade to 1.18.4 (most consistent fix reported)

This fix worked for multiple Windows 11 users and is quick to try.

1. Fully exit Antigravity

• Quit AG and ensure no background processes remain (Task Manager on Windows).

2. Install AG 1.16.5

• Open PowerShell as Administrator and run:

winget install antigravity --version 1.16.5 --force

• Launch AG 1.16.5 and confirm your conversation history is visible.

3. Upgrade back to the latest

• If the in-app updater offers 1.18.4, install it directly. Otherwise, use:

winget upgrade antigravity

Note: winget may offer 1.18.3 before 1.18.4 is indexed. If so, consider the in-app updater or download the newest installer from the official releases channel. After upgrading, reopen AG and verify the history remains intact.

If you encounter a runtime crash during reinstall/upgrade, see how to fix agent terminated errors in AG.

Alternative Fixes & Workarounds

Solution 2 — Select a workspace folder

• Several users reported that choosing a workspace folder in AG (or opening a folder in your editor host) restores the history list. This hints at workspace-scoped chat storage or filtering in 1.18.x.
• Try: open a project folder, then reopen the AG sidebar. Check if your threads repopulate.

Solution 3 — Trigger a local index refresh by reading your chat store directories

• A forum post described forcing a UI refresh by listing every chat directory (originally via a tool API). Locally, you can mimic file-read events to nudge AG’s watcher:
• On Windows PowerShell (adjust user as needed):

$chatRoot = "$env:USERPROFILE\.gemini\antigravity\brain"
Get-ChildItem -Path $chatRoot -Directory -ErrorAction SilentlyContinue | ForEach-Object {
 Get-ChildItem -Path $_.FullName -Force -ErrorAction SilentlyContinue | Out-Null
}

• On Linux/WSL2 (path from the forum reference; use with care):

find ~/.gemini/antigravity/brain -type d -maxdepth 1 -mindepth 1 -exec bash -lc 'ls -la "{}" >/dev/null' \;

This does not modify your files; it just reads directories to provoke watcher events. The path ~/.gemini/antigravity/brain comes from the discussion and may vary on your system.

If you also run into the “account not eligible” prompt after reinstall, here’s a short fix: resolve account eligibility errors in AG.

Solution 4 — Stay on 1.16.5 temporarily

• If the upgrade back to 1.18.x hides your threads again, keep 1.16.5 installed until a stable patch lands. Re-check for updates regularly.

Solution 5 — Update from December builds

• If you installed a December build that now says the app is not supported, accept the update to current 1.18.x and then try Solution 1 to restore indexing.

Troubleshooting Tips

• Confirm the version you upgraded to
• 1.18.4 reportedly resolves this for some. winget can lag; the in-app updater or official installer might be newer than winget.
• WSL2 + Windows file paths
• If you work inside WSL2, verify where AG stores chats. Check both:
• Windows: C:\Users<your_user>.gemini\antigravity\brain
• Linux/WSL: ~/.gemini/antigravity/brain
• Workspace filter
• If your history is empty, open a folder/workspace and check again. Some users see the list only when a folder is active.
• Quit fully after changes
• After downgrading/upgrading or running the refresh scripts, fully close AG and reopen it.
• If conversations return on 1.16.5 but vanish on 1.18.x
• Keep 1.16.5 and monitor updates. Report your environment (Windows 11 25H2, WSL2 usage, AG and host editor versions) to maintainers to help them reproduce.

Seeing thinking stalls or short replies when your threads do show up? You can also check this quick guide: fix 1024‑token “not thinking” behavior in AG.

Best Practices

• Export or back up chats before upgrading
• Regularly back up the chat store folder so you can restore if an index regression appears.
• Update in stages
• If you’re on Windows 11 + WSL2, test updates on a secondary machine or VM first.
• Keep a workspace open
• If your workflow is project-based, leave a workspace/folder open so history isn’t filtered out by scope.
• Document your environment
• Note OS, AG version, editor host version, and steps to reproduce—this shortens fix time when you need support.

Final Thought

The fastest, most reliable fix right now is to install AG 1.16.5, confirm your history returns, and then upgrade to the latest 1.18.4. If it doesn’t stick, select a workspace or trigger a local index refresh—both have helped users recover their full conversation list.