My Telegram Proxy Is Not Working — 12 Fixes That Always Help
Diagnose and fix the most common reasons a Telegram proxy stops working — from typos to ISP-level blocking.
Step 1: confirm you typed the secret correctly
The single most common cause of "proxy not working" is a typo in the secret. The secret is a 33 or 34 character hexadecimal string starting with "dd" or "ee". A single missing character — even a leading space — will cause Telegram to fail silently. Always use the copy button on tgfast.top instead of retyping. After pasting, verify the length: it should be exactly 34 characters for "dd…" secrets and 33 for some "ee" variants.
Step 2: try a different server
TGFast operates multiple proxies (our proxy fleet). If one is being blocked, throttled or overloaded, the others almost always work. We deliberately spread our infrastructure across multiple datacentres and IP ranges precisely so that ISP-level blocking of a single IP cannot take down the whole service. Switching servers takes one tap.
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Open the fleetStep 3: clear Telegram's cache
Telegram aggressively caches DNS lookups and old proxy routes. After a server change or IP rotation, Telegram may keep trying the old endpoint for several minutes. Clear the cache: Settings → Data and Storage → Storage Usage → Clear Cache. On iOS and Android, also force-stop the app (do not just minimize it) and relaunch.
Step 4: switch from Wi-Fi to cellular (or vice versa)
Some networks block MTProto more aggressively than others. If your home Wi-Fi is interfering, try the proxy on cellular data — if it suddenly works, you know the issue is at your router, not your phone. The opposite is also possible: a corporate Wi-Fi may be the only network where the proxy works because it has unrestricted outbound, while your carrier rate-limits encrypted traffic.
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Join Telegram ChannelStep 5: check the date and time on your device
MTProto uses time-based key derivation. If your device clock is off by more than 30 seconds, the proxy will fail the integrity check and disconnect. Make sure your phone or computer is set to "set date and time automatically" using a network time server.
Step 6: disable other VPNs
Running an MTProto proxy on top of a system-wide VPN is supported but often slow and prone to packet drop. If your VPN provider uses "split tunnelling" you may need to explicitly route Telegram outside the VPN. If you do not need the VPN, disable it temporarily — many users report instant proxy success after toggling it off.
Step 7: update Telegram to the latest version
Telegram's proxy implementation has improved significantly in 2024-2026 (better fallback logic, more aggressive reconnection, support for the new "ee" obfuscation). Make sure you are on the latest version from the official store. Avoid third-party Telegram clients (Plus Messenger, Nicegram, etc.) for proxy testing — many have stale proxy code.
Step 8: try a different DNS server
If your ISP blocks Telegram's domain (e.g. core.telegram.org) at the DNS level, even the proxy may behave strangely because Telegram still does some side-channel DNS lookups. Switch to Cloudflare (1.1.1.1), Google (8.8.8.8) or NextDNS as a quick test.
Step 9: check IPv6 settings
On a few mobile carriers in Asia, IPv6 is enabled by default but routes Telegram traffic differently than IPv4. If everything is failing, try disabling IPv6 in your phone's APN settings as a diagnostic.
Step 10: confirm the proxy is actually toggled on
It sounds silly but it happens often: people add a proxy to the list and forget to flip the master toggle at the top. Double-check that the "use a TGFast proxy" switch is green, not just that a proxy entry exists.
Step 11: reinstall Telegram
If nothing else works, uninstall and reinstall Telegram. This is a last resort but it clears any corrupted local state. Your messages and chats are stored on Telegram's servers and will sync back automatically once you log in.
Step 12: ask in our channel
Sometimes a server has a temporary issue we have not noticed yet. Join @FastTGProxyMT — we post real-time status updates and respond to questions within minutes. Reporting an issue with your country and ISP helps us tune the relevant server.