You type a question into ChatGPT, hit enter, and nothing comes back — just “An error occurred,” a “Network error,” or a spinner that never stops. The first time it happened to me mid-deadline, I assumed my account was banned. Almost every time ChatGPT stops working, the cause is something temporary on your own device, not a ban or a dead account.
Quick Answer
When ChatGPT is not working, first check status.openai.com for an outage. If servers are healthy, do a hard refresh (Ctrl + Shift + R on Windows, Cmd + Shift + R on Mac), then clear your browser cache and cookies. Still stuck? Disable extensions or open ChatGPT in an incognito window to isolate the cause.
Is ChatGPT Actually Down, or Is It Just Me?
Before changing a single setting, I confirm the problem is not on OpenAI’s end. It takes ten seconds and saves a lot of pointless troubleshooting.
- Open status.openai.com in a new tab.
- Look for active incidents or any “degraded performance” notice.
- If an outage is listed, the only real fix is to wait — OpenAI’s engineers are already on it.
On the status page I always click “Subscribe to updates.” The one time servers were genuinely down, I got an email the moment service returned instead of refreshing the page every two minutes. If you want a backup tool while you wait, my comparison of ChatGPT vs Gemini vs Claude shows which free chatbot to switch to for the task at hand.
If the status page shows green, the problem is on your device — keep going.
How Do I Force ChatGPT to Reload Cleanly?
A normal refresh (F5 or Ctrl + R) reloads the page from your browser’s cache, which may be the exact broken file causing the error. A hard refresh forces a fresh download straight from OpenAI’s servers.
- Click anywhere inside the ChatGPT tab.
- Press Ctrl + Shift + R (Windows/Linux) or Cmd + Shift + R (Mac).
- Wait for the page to fully reload, then send a test message.
When a hard refresh leaves the page blank or stuck, I stop and move to the cache clear below — that pattern usually means the cached data is corrupted, not merely stale.
A hard refresh fixes the broken-file errors a plain refresh quietly reloads.
Why Does Clearing My Cache and Cookies Fix ChatGPT?
Expired session cookies and corrupted cache files are the single most common cause of persistent ChatGPT errors I see. Clearing them forces a clean login and wipes out the bad data that keeps tripping the page.
In Google Chrome
- Press Ctrl + Shift + Delete (Windows) or Cmd + Shift + Delete (Mac).
- Set the time range to All time.
- Check Cached images and files and Cookies and other site data.
- Click Clear data.
- Reload ChatGPT and log back in.
The same shortcut opens an almost identical dialog in Firefox and Microsoft Edge. One detail that matters: if you suspect a corrupted session, log out of ChatGPT first, then clear cookies, then log back in. Logging out first ensures the bad session token is fully removed rather than left behind.
Clearing cache and cookies after a clean logout resolves most stubborn, repeat errors.
Can a Browser Extension Stop ChatGPT From Replying?
Yes — and this one fooled me for an hour once. Ad blockers, script blockers, and privacy extensions can silently block the JavaScript requests ChatGPT needs to stream responses. There is often no error at all: the interface loads, but it never answers.
- In Chrome, click the puzzle-piece icon at the top right and choose Manage Extensions.
- Toggle every extension off.
- Reload ChatGPT and test it.
- If it works, switch extensions back on one at a time until the culprit appears.
In my case, uBlock Origin in aggressive-filtering mode was blocking OpenAI’s endpoint, so ChatGPT loaded visually but never sent my message. The faster test: open an incognito window, where extensions are disabled by default. If ChatGPT works there, an extension is your problem.
A blocking extension can break ChatGPT with no error message at all.
Does Incognito Mode or a Different Browser Help?
An incognito (private) window isolates you from stored cookies, cached data, and most extensions in a single move, so it is my fastest test for browser-specific trouble.
- Press Ctrl + Shift + N (Chrome/Edge) or Ctrl + Shift + P (Firefox).
- Go to chat.openai.com and test ChatGPT.
If it works in incognito, the fix lives in your normal browser — clear the cache or hunt down the extension. If it still fails in incognito, open a completely different browser to rule out browser-level corruption entirely. One catch: some extensions are allowed to run in incognito, so check each one’s incognito permission under Manage Extensions if a private window still misbehaves.
Incognito mode tells you in seconds whether your normal browser profile is the problem.
Could My VPN or DNS Be Blocking ChatGPT?
Both can, and they produce nearly identical “it just won’t connect” symptoms. VPNs route traffic through shared servers, and OpenAI sometimes rate-limits or blocks IPs tied to busy exit nodes. A stale DNS entry for OpenAI’s servers triggers “network error” messages even when your Wi-Fi looks perfect.
Turn Off Your VPN or Proxy
- Open your VPN app and disconnect completely.
- Reload ChatGPT and test without the VPN active.
- If it works, reconnect using a different server location — ideally one geographically closer to you, since those carry less flagged traffic.
Flush Your DNS Cache
First confirm the internet itself is fine at fast.com or speedtest.net, then flush DNS.
On Windows
- Press Win + R, type cmd, and press Enter.
- Type ipconfig /flushdns and press Enter.
- You will see “Successfully flushed the DNS Resolver Cache.”
- Reload ChatGPT.
On Mac
- Open Terminal (search in Spotlight).
- Type sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
- Enter your Mac password and press Enter.
- Reload ChatGPT.
If the network errors persist after this, the issue is broader than ChatGPT, and OpenAI’s own help center documents service-side connection problems worth ruling out.
A flagged VPN IP or a stuck DNS entry can make ChatGPT look completely broken while everything else loads fine.
Which Fix Should I Try First?
When I am short on time, I work top to bottom — the fixes are ordered by how often they solve the problem versus how long they take.
| Fix | Best for | Time |
|---|---|---|
| Check server status | Total outage, error on every device | 10 sec |
| Hard refresh | Blank page, stuck spinner | 15 sec |
| Clear cache + cookies | Repeat errors, login loops | 2 min |
| Disable extensions | Loads but never replies | 2 min |
| VPN off / DNS flush | “Network error” only | 1 min |
For a sibling tool that throws similar errors, the same logic powers my guide on Google Gemini not responding.
Working the table top to bottom resolves most cases by the cache or extension step.
Common Mistakes to Avoid
- Assuming it is always an outage. Most errors are local. If status.openai.com shows green, keep troubleshooting your own device.
- Using a normal refresh instead of a hard refresh. Ctrl + R reloads from cache; Ctrl + Shift + R forces a fresh download. Use the hard refresh.
- Forgetting extensions can run in incognito. If you granted incognito access, the extension can still break ChatGPT there — check its permissions under Manage Extensions.
- Reconnecting to the same VPN server. Toggling off and back on to the same node changes nothing. Switch locations or disable the VPN while testing.
- Clearing cookies without logging out first. A corrupted session token can survive a cache clear. Log out, clear, then log back in.
Skip these five traps and you avoid the dead ends that waste the most troubleshooting time.
Frequently Asked Questions
Why does ChatGPT say “An error occurred”?
It usually means a server-side hiccup, an expired session token, or a dropped connection. Clearing your cache and disabling extensions fixes it in most cases. Last week mine cleared instantly the moment I logged out, wiped cookies, and signed back in.
Is ChatGPT down right now?
Check status.openai.com for live server status. If no incident is listed but ChatGPT still fails, the problem is on your device or local network. I once spent ten minutes blaming OpenAI before realizing my own VPN was the block.
Why does ChatGPT keep stopping in the middle of a response?
A brief connection dip while ChatGPT streams the reply is the usual cause, though hitting the output limit also cuts answers short. Switch to wired Ethernet or move closer to your router; for the token-limit version, see my guide on why ChatGPT cuts off mid-response.
Why can’t I log in to ChatGPT?
Clear your cookies and cache fully, then try again. When I use “Sign in with Google,” I open a separate tab first to confirm that account is working, which has saved me twice from blaming ChatGPT for a Google session glitch.
Does a VPN stop ChatGPT from working?
Not always, but it can — some VPN IP ranges are rate-limited by OpenAI. Disable the VPN and test; if it loads, reconnect on a different server. A nearby server location fixed it for me every time.
Why does ChatGPT work on my phone but not my computer?
Your desktop browser likely has a conflicting extension, a corrupted cache, or different DNS than your phone. Start with the cache clear and extension check on the computer. That combination has resolved every phone-works-but-laptop-fails case I have hit.
Conclusion
Nearly every “ChatGPT not working” moment comes down to a quick server check, a hard refresh, a cache clear, a disabled extension, or a VPN and DNS reset. Work the list top to bottom and you will usually be back in business within a minute or two.
Bookmark this page so the next time ChatGPT throws an error, your fix checklist is one click away.