The “Grok was unable to finish replying” error usually means the connection between your device and xAI’s servers was interrupted, or the AI crashed while trying to generate a complex answer.
It is rarely a content refusal (which usually says “I cannot answer that”). Instead, it is almost always a technical glitch.
Here are the most common causes and how to fix them immediately.
1. The “Ad Blocker” Conflict (Most Common)
Browser extensions that block ads or tracking scripts often mistakenly block the stream of text coming from Grok.
The Fix: Disable your ad blocker (like uBlock Origin, AdBlock Plus) or privacy extensions (like Ghostery) specifically for
x.comandgrok.com.Test: Open an Incognito/Private window and try the same prompt. If it works there, one of your extensions is definitely the culprit.
2. Corrupted Browser Data
Old cache files or cookies can confuse the login session, causing the stream to cut off mid-sentence.
The Fix: Clear your cache and cookies for X (Twitter) and Grok.
Chrome/Edge: Settings > Privacy and Security > Site Settings > View permissions and data across sites > Search for “x.com” and “grok.com” > Delete data.
Mobile App: Force close the X app and clear its cache in your phone settings.
Also Read : Twitter Not Loading
3. Server Overload
If you are using a high-reasoning model (like Grok 2 or 3) during peak hours, the server may time out if the answer is too long or complex.
The Fix: Wait 5 minutes and try again.
Workaround: If your prompt was very long or asked for a massive amount of code/text, try breaking it into two smaller requests.
4. VPN Interference
Grok’s security systems sometimes flag VPN IP addresses as “bot behavior,” cutting the connection mid-reply.
The Fix: Turn off your VPN temporarily to see if the issue resolves.
Summary Checklist:
Refresh the page (F5).
Turn off AdBlockers.
Try Incognito mode.
If it still fails, the issue is likely on xAI’s end (a server outage), and you just have to wait it out.
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