How to Set Up a Proxy in an Antidetect Browser (and Fix "Proxy Check Failed")
One IP per profile, the four fields in the right place, and the real reasons a proxy check fails — including the error codes our own gateway returns.
Recommended setup for every profile
Recommended setup for every profile
Item
Choose
Why
Product
Static ISP proxy
A fixed home-broadband IP that stays the same for your whole term
How many IPs
One per profile
Profiles that share an IP share an address the platform can see
Protocol
The one shown on the asset: SOCKS5 or HTTP
AdsPower names a wrong type among the main causes of a failed check
Country
Where the account was created
Keep it fixed; let the profile take time zone and language from the IP
WebRTC
Follow or replace with the proxy IP
Otherwise WebRTC can reveal your real public IP
The button at the top opens static ISP proxies for social accounts. Our social presets start with SOCKS5 and our store presets with HTTP; you choose the protocol when you buy, and the asset keeps it.
Buy one static ISP IP per profile and pick the country of each account. From mainland China, first run the helper tool from Tools & checks → Helper tools in the console.
In My assets open the proxy and use Copy all: host, port, username and password. Rotating residential proxies use the gateway proxy.proxy302.com — port 2222 for HTTP and 3333 for SOCKS5.
Create the profile
Choose a custom proxy, set the type to match the asset and paste the fields. BitBrowser, GoLogin and GenLogin also accept host:port:username:password in one line.
Run the browser's proxy check
Most browsers in the table below have a check or test button — save the profile only after it passes. In Huayang, open a profile that uses the pool and check the exit IP instead.
Expected result The check shows an IP in the country you bought.
Confirm inside the profile
Open the profile, visit ipinfo.io and run a WebRTC leak test. The IP must match the asset and no second address may appear.
Check Does the proxy type (HTTP or SOCKS5) match the asset? Did you paste all four fields exactly, with no space or scheme in the host field?
Fix Copy again with Copy all and set the type shown on the asset. AdsPower names a protocol mismatch and entry mistakes among the main causes.
407 or "CONNECT tunnel failed, response 407"
Check That is our gateway refusing a missing or wrong username or password — confirmed in our own test on 18 October 2026.
Fix Use this asset's credentials; do not reuse an old or deleted asset's password.
"User was rejected by the SOCKS5 server"
Check The SOCKS5 port refused the credentials, also from our test.
Fix Check the username and password, or switch the profile to HTTP if the asset shows HTTP.
Timeout from mainland China
Check Is the helper tool running? Networks in mainland China cannot reach overseas proxies directly.
Fix Open Tools & checks → Helper tools, start it, then run the check again.
The check passes, but the profile shows your own IP
Check Is a VPN, encrypted-connection extension, antivirus or firewall interfering? AdsPower names these as causes.
Fix Turn them off for the test, remove conflicting extensions from the profile and check again.
It worked yesterday, fails today
Check Has the asset expired, or has the line's traffic or the wallet balance run out?
Fix Top up or add traffic, then check again. A static IP cannot be renewed after its end date — buy a new one (renew before the end date, or switch on auto-renew, to avoid this). Expired or disabled assets cannot connect.
Common questions
Can several profiles share one proxy?
They can connect, but every platform then sees the same address behind all of them — which defeats the point of separate profiles. Give each profile its own IP.
Static or rotating proxies for antidetect profiles?
Static ISP for any profile that stays logged in. Rotating residential only with a sticky session, for short tasks that do not need the same IP tomorrow.
Any that takes an HTTP or SOCKS5 proxy with a username and password. We have step-by-step pages for AdsPower, BitBrowser, GoLogin, Kameleo, Hidemium, GenLogin, Huayang and Dolphin {anty}, and a page that compares all eight.
If you do not have an antidetect browser yet, BitBrowser gives each account its own environment and can import Proxy302 proxies (exclusive coupon 9BC6SANEIX, up to 46% off).
Check your fingerprint and IP with BrowserScan
BrowserScan is a free web tool that shows what a website can read from your browser, device and connection: fingerprint details, IP, WebRTC and DNS leak checks. After you set a proxy, open it inside the same profile and see whether the IP, time zone and language it reports match what you intended. It is a third-party tool and a Proxy302 partner; treat its readings as one input next to the other checks on this page.
Step-by-step guide to using Proxy302 proxies in AdsPower: where to paste host, port, username and password, which proxy to buy, partner offers and FAQ.
Step-by-step guide to using Proxy302 proxies in BitBrowser: where to paste host, port, username and password, which proxy to buy, partner offers and FAQ.
Import a Proxy302 static IP or rotating residential into Huayang with one pasted line. Includes the Hong Kong access point for users in mainland China and help-center screenshots.
Instagram proxies for brands and agencies: one static ISP IP per account, in the US, UK or the country you pick. Works in antidetect browsers and on iPhone.
TikTok proxy for creators, sellers and agencies: one static ISP IP per account in the market it posts for, SOCKS5 or HTTP — for TikTok on the web and on iPhone.
Twitter (X) proxy for brand, client and regional accounts: one static ISP IP per account in the country you choose, SOCKS5 or HTTP — also where X is blocked.
Our integration pages for AdsPower, BitBrowser, GoLogin, Kameleo, Hidemium, GenLogin and Huayang; each one follows the browser's own documentation, checked on 18 October 2026.
Our requests to the Proxy302 gateway with wrong credentials
Local example · Confirmed on:
At 00:03 UTC on 18 October 2026, from a network in Singapore, we sent requests through proxy.proxy302.com:2222 (HTTP) and :3333 (SOCKS5) with no or wrong credentials and recorded the responses.
Proxy302 console: My assets, Tools & checks page and presets
Product observation · Confirmed on:
Read from the console source on 18 October 2026: My assets offers View credentials and Copy all; the Tools & checks page lists the helper tool (Windows / macOS) and partner antidetect browsers; social-account presets start with a static ISP IP over SOCKS5 and store presets over HTTP; the public gateway for rotating residential is proxy.proxy302.com (HTTP 2222, SOCKS5 3333).