The “No Healthy Upstream” error on Testbook.com is a technical issue on their end, not yours. Testbook’s “traffic controller” (load balancer) is trying to send your request to their main servers, but it cannot find a healthy server to accept it.
What this error means
The Problem: Testbook’s “traffic controller” (load balancer) is trying to send your request to their main servers, but it cannot find a healthy server to accept it.
The Cause: This usually happens during high traffic (e.g., when a major exam result or admit card is released) or when they are performing backend maintenance.
Immediate Steps You Can Take
Since this is a server-side error, you generally have to wait for them to fix it. However, you can try these steps to ensure you aren’t seeing a “stale” version of the error:
Wait 10–15 Minutes: These errors are often temporary glitches caused by a sudden spike in users.
Hard Refresh:
Windows: Press
Ctrl+F5Mac: Press
Cmd+Shift+R
Try the App: If you are on the website, check if the Testbook App is working, as it sometimes uses different API routes.
Use Incognito Mode: Open the site in an Incognito/Private window. If it works there, you may just need to clear your browser cache.
Also Read : Cloudflare Tunnel Error | Error 1033
How to check if it’s down for everyone
If you want to confirm it’s a total outage:
Check Social Media: Search “Testbook down” on Twitter/X to see if other students are reporting the same issue.
Is Up: You can visit a site like IsItDownRightNow or UpdownRadar to see if the site is pinging correctly from other locations.
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