How to Set Up a Proxy in an Antidetect Browser (Step by Step)

What an antidetect browser actually does

A regular browser has one fingerprint: the same canvas and WebGL output, fonts, screen size, user agent and cookie jar for every site you open. An antidetect browser lets you create many isolated profiles, and each profile gets its own fingerprint, its own cookies and local storage, and its own network settings. To a website, two profiles look like two different computers.

The fingerprint covers the device. The proxy covers the network. Without a proxy, every profile still leaves through your home or office IP, and that single shared address is often the first signal a platform uses to link accounts. That is why the proxy is not an optional extra in an antidetect setup: it is half of the isolation.

Popular tools include Multilogin, GoLogin, AdsPower, Dolphin Anty and Octo Browser. Their interfaces differ and change between versions, so this guide describes the steps and settings they share rather than exact button names. If a field is called slightly differently in your tool, look for the same concept.

Before you start: what you need from the proxy provider

Collect these details before opening the browser. Most failed setups come from a mistyped value, not a broken proxy.

• Protocol: HTTP(S) or SOCKS5. Many providers give both on different ports, so note which port belongs to which protocol.
• Host: an IP address or a domain name.
• Port: a number from 1 to 65535.
• Authentication: login and password, or an IP whitelist (the provider allows connections only from your registered IP).
• Country and city of the exit IP, if the provider states them. You will compare this with the check result later.

Proxies usually arrive as a text line in one of several formats. If your antidetect browser does not accept the format you have, run the list through the free proxy checker and format converter: it parses ip:port, ip:port:login:password, login:password@ip:port, socks5:// and http:// URLs and flags invalid lines.

203.0.113.25:8000:user123:pass456
user123:[email protected]:8000
socks5://user123:[email protected]:1080
http://user123:[email protected]:8000

Step-by-step proxy setup in an antidetect profile

Step 1. Create a new profile

Create a fresh profile for every account. Choose the operating system and browser core that match your use case, and let the tool generate a fingerprint. Avoid copying one profile into dozens: cloned profiles often share more parameters than you expect.

Step 2. Open the proxy settings and choose the protocol

In the profile editor, find the proxy or connection section and select the type. Pick SOCKS5 if your provider issued a SOCKS5 port, and HTTP (sometimes listed as HTTP/HTTPS) for an HTTP port. The protocol must match the port: an HTTP port will not answer a SOCKS5 handshake and vice versa. If you are unsure about the difference, see what a SOCKS5 proxy is.

Step 3. Enter host, port, login and password

Fill in the fields separately, or use the paste or quick import field that most tools offer and insert the full string. After pasting, check that the tool split the string correctly: a login placed into the port field is a classic mistake. Make sure there are no trailing spaces in the password.

Step 4. Run the connection check

Press the check or test button. A successful check shows the exit IP and country; compare them with your order. If the check fails, do not save the profile yet: go to the error table below.

Step 5. Match timezone, language and geolocation to the IP

Most antidetect browsers can fill timezone, locale and geolocation automatically based on the proxy IP. Turn that on. A profile with a German IP, a New York timezone and a Russian interface language is inconsistent, and inconsistency is exactly what anti-fraud systems look for.

Step 6. Set the WebRTC mode

WebRTC can reveal your real local or public IP even when a proxy is active. Antidetect tools usually offer modes such as replacing the WebRTC IP with the proxy IP, disabling WebRTC, or leaving it real. Replacing it with the proxy IP is the most common choice, because a fully disabled WebRTC is itself an unusual signal on some sites. Leaving it real is rarely what you want.

Step 7. Save, launch and verify inside the profile

Start the profile and open an IP and leak test page inside it. Confirm the IP, the timezone, and that WebRTC and DNS show the proxy location rather than yours. Our guide on how to test a proxy lists what to look at.

The one proxy per profile rule

Each profile should have its own IP, and that IP should stay with the profile for its whole life. If ten profiles share one address, the platform sees ten different devices behind one connection, which links them as surely as a shared cookie. If one profile jumps between many IPs and countries, it looks like a hijacked account.

• Assign a dedicated proxy to each profile and write down which IP belongs to which account.
• Keep the country stable. If an account was registered from the UK, keep it on UK IPs.
• With rotating mobile proxies, prefer sticky sessions or rotation on demand rather than changing the IP every minute during a session.
• Do not reuse an IP from a banned account for a new one.

Which proxy types fit antidetect browsers

For media buying and ad accounts, mobile and ISP proxies are the usual pick, see proxies for arbitrage and proxies for Facebook. For a deeper comparison of address sources, read residential vs datacenter proxies.

Common mistakes that break the setup

Wrong protocol for the port

The connection hangs or fails right away. Check which port your provider assigned to HTTP and which to SOCKS5, and switch the protocol in the profile.

Authentication failures

Login and password are case sensitive. Copy them again from the order page, remove spaces, and make sure they did not swap places when the string was split.

IP whitelist instead of login

If the proxy is authorized by IP whitelist, the provider only accepts connections from the IP you registered. When your own IP changes (new Wi-Fi, mobile hotspot, VPN on the host machine), the proxy stops working. Either update the whitelist or switch to login and password authentication, which is more convenient for antidetect work.

Timezone and locale mismatch

The proxy works, but accounts get extra verification. Often the profile still shows your real timezone or language. Re-enable the setting that takes these values from the IP, and re-check after changing the proxy.

DNS leaks

DNS requests that go through your local resolver can reveal your real provider. With SOCKS5, make sure hostnames are resolved on the proxy side (remote DNS). Run a DNS leak test inside the profile: the resolvers shown should belong to the proxy region, not to your home ISP.

Error messages and how to fix them

Wording varies between tools, but the causes are the same.

Quick checklist before you log into an account

1. 1Proxy line validated, protocol matches the port.
2. 2Connection check in the antidetect browser passes and shows the expected country.
3. 3Timezone, language and geolocation taken from the proxy IP.
4. 4WebRTC replaced with the proxy IP, DNS leak test clean.
5. 5One proxy assigned to exactly one profile, and the mapping is written down.
6. 6Account activity follows the platform rules: no spam, no fake engagement, no fraud.

A good proxy and a clean fingerprint reduce technical signals, but they do not make rule violations safe. If you run social accounts, also read our guide to proxies for Instagram and TikTok multi-accounting. You can browse all proxy types in the catalog; TrueSocks delivers HTTP(S) and SOCKS5 proxies right after payment.