Antigravity Not Working? How to Fix Common Errors, Crashes, and Outages (2026)

Antigravity usually stops working for one of three reasons: a backend outage on Google's side, an expired or revoked login session, or you've hit the preview-tier usage quota tied to Gemini 3. Antigravity is still in public preview as of early 2026, so it's newer and less stable than mature IDEs like Cursor or VS Code with Copilot.

• It's built as a fork of VS Code, so most "not working" reports trace back to the same causes as any Electron-based editor: extension conflicts, corrupted workspace state, or network/proxy blocks.
• Because it runs on Gemini 3 models via Google's cloud infrastructure, an outage on Google Cloud's status page will take Antigravity down even if your local install is fine.
• Best for developers already inside the Google/Gemini ecosystem who are comfortable with a preview-stage tool; not ideal if you need guaranteed uptime for daily production work.

Why is Antigravity not working?

Antigravity is usually not working because of a temporary Google Cloud/Gemini backend issue, an expired OAuth session, a stuck agent task, or a preview-tier rate limit. Since Antigravity is still in public preview, service interruptions and quota resets are more frequent than with established tools like Cursor or Copilot.

What are the most common Antigravity errors and how do I fix them?

Most Antigravity errors fall into four categories: connection/auth failures, agent timeouts, extension conflicts, and quota exhaustion. The table below maps the symptom to the likely cause and the fastest fix.

Symptom	Likely cause	Fix
Agent spins forever with no output	Backend timeout or dropped websocket connection	Cancel the task, restart Antigravity, retry with a shorter prompt
"Authentication failed" or repeated login prompts	Expired Google OAuth token	Sign out fully, clear cached credentials, sign back in
Browser subagent won't launch	Missing permissions or sandboxed environment blocking headless browser	Grant local automation permissions in OS settings; whitelist Antigravity in firewall
"Quota exceeded" or model falls back unexpectedly	Preview-tier Gemini 3 rate limit reached	Wait for the quota window to reset or check current limits in Google's docs
Editor freezes on startup	Corrupted workspace cache (common in VS Code forks)	Delete the local workspace storage folder and relaunch
Extensions crash or won't load	Incompatibility with Antigravity's VS Code fork version	Disable third-party extensions one by one to isolate the conflict

Is Antigravity down right now?

To check if Antigravity is down, visit Google Cloud's status dashboard for Gemini/Vertex AI incidents, or check a third-party tracker like Downdetector for spikes in user reports. If other Gemini-based tools are also failing for you, the issue is almost certainly on Google's end, not your machine.

Why is the Antigravity agent stuck or not responding?

An Antigravity agent usually gets stuck when a long-running task (like a multi-file edit or browser automation step) loses its connection to the backend mid-execution. Cancel the task manually, check your network connection, and restart the agent session rather than waiting it out.

If this happens repeatedly on the same type of task, break the prompt into smaller steps. Agentic IDEs across the board, including Windsurf and Kiro, show the same pattern: large, multi-step agent requests are more fragile than smaller, scoped ones.

How do I fix Antigravity login or authentication issues?

Fix Antigravity login issues by fully signing out (not just closing the window), clearing the app's cached credentials folder, and signing back in with the Google account tied to your Gemini access. If you use Google Workspace with restrictive admin policies, confirm your org hasn't blocked third-party OAuth app access, which is a common silent cause of repeated login loops.

Why am I hitting Antigravity rate limit or quota errors?

You're hitting rate limit errors because Antigravity's preview access to Gemini 3 is capped, and heavy agent usage (parallel tasks, browser subagents, long context windows) burns through that quota faster than simple autocomplete. For a full breakdown of current tiers and what triggers throttling, see our Antigravity pricing and rate limits guide.

Until Google ships usage dashboards as granular as Claude Code's /usage command, the practical workaround is the same one developers use everywhere: run fewer parallel agents, trim unnecessary context, and space out large refactors instead of batching them.

How does Antigravity compare to other AI IDEs when things go wrong?

Antigravity's failure patterns look similar to other agentic IDEs still maturing their infrastructure. Codex and Copilot have more mature, battle-tested backends, so outages are rarer but their agent features are also less autonomous. Cursor sits in between: stable editor core, occasional agent-mode hiccups under heavy load.

If reliability matters more than cutting-edge agentic features, an established tool is the safer daily driver. If you want the newest Gemini 3 capabilities and can tolerate preview-stage bugs, Antigravity is still worth running alongside a backup editor.

Key takeaways

• Check Google Cloud's status page first; most "Antigravity not working" reports are backend outages, not local bugs.
• Full sign-out and credential clear fixes the majority of authentication loops.
• Stuck agents should be cancelled and restarted rather than left to time out.
• Quota/rate-limit errors are expected during preview; see the pricing and rate limits breakdown for current caps.
• Extension and workspace cache corruption cause most local-only crashes, since Antigravity runs on a VS Code fork.

Sources

• Google Antigravity (official site)
• Google Cloud Status Dashboard
• Downdetector
• Visual Studio Code