# Lauth Proxy Setup: Add, Test and Fix > Lauth proxy setup step by step: Connection and proxy, the four fields, HTTP or SOCKS5, Test proxy, one sticky session per profile and a fix for each error. [Home](https://quanticdata.io/) / [Blog](https://quanticdata.io/blog/) / Lauth Proxy Setup: Add, Test and Fix # How to set up a proxy in Lauth: add it, test it, fix the errors Proxies · Oct 24, 2026 · 12 min read · By [Aldo Morese](https://quanticdata.io/about/), founder of QuanticData ![Setting up a proxy in a Lauth profile in four steps: generate a sticky line in the QuanticData endpoint generator, split it into IP Address/Host, Port, User name and Access password under Connection and proxy with HTTP on port 8080 or SOCKS5 on port 1080, click Test proxy for the IP and its location, then Save editions; the card lists the three things to verify when the test fails.](https://quanticdata.io/blog/lauth-proxy-setup/hero.webp?v=20261024h) On this page - [What you need before you start](https://quanticdata.io/blog/lauth-proxy-setup/#what-you-need-before-you-start) - [Where the proxy goes in Lauth](https://quanticdata.io/blog/lauth-proxy-setup/#where-the-proxy-goes-in-lauth) - [Step by step: add a proxy to a Lauth profile](https://quanticdata.io/blog/lauth-proxy-setup/#step-by-step-add-a-proxy-to-a-lauth-profile) - [Test proxy: what the Proxy data window says](https://quanticdata.io/blog/lauth-proxy-setup/#test-proxy-what-the-proxy-data-window-says) - [One sticky session per profile](https://quanticdata.io/blog/lauth-proxy-setup/#one-sticky-session-per-profile) - [Which proxy type for which profile](https://quanticdata.io/blog/lauth-proxy-setup/#which-proxy-type-for-which-profile) - [ISP proxies in Lauth](https://quanticdata.io/blog/lauth-proxy-setup/#isp-proxies-in-lauth) - [Mobile proxies in Lauth](https://quanticdata.io/blog/lauth-proxy-setup/#mobile-proxies-in-lauth) - [Saved proxies and many profiles](https://quanticdata.io/blog/lauth-proxy-setup/#saved-proxies-and-many-profiles) - [A new IP without touching the profile's other settings](https://quanticdata.io/blog/lauth-proxy-setup/#a-new-ip-without-touching-the-profile-s-other-settings) - [Lauth proxy not working: errors and fixes](https://quanticdata.io/blog/lauth-proxy-setup/#lauth-proxy-not-working-errors-and-fixes) - [HTTP or SOCKS5 in Lauth](https://quanticdata.io/blog/lauth-proxy-setup/#http-or-socks5-in-lauth) - [Before you run accounts](https://quanticdata.io/blog/lauth-proxy-setup/#before-you-run-accounts) To add a proxy in Lauth, open the profile's Connection and proxy settings, turn on Browse using proxy, choose HTTP or SOCKS5 to match the port, fill IP Address/Host and Port, turn on Proxy requires authentication, enter the user name and password, click Test proxy and Save editions. Below: each step, Residential Premium, ISP and mobile lines, and a fix for each error. Lauth is a Brazilian antidetect browser: every profile keeps its own cookies, its own device data and, once you add one, its own proxy. The proxy decides which IP address and which country the sites see. The field names below are the ones in Lauth's own help centre and in the current app, with the Portuguese labels next to them, and the values come from the QuanticData endpoint generator. The screens are redrawn with our values; the Test proxy result shown is a real check of a Brazilian line made on 24 October 2026. ## What you need before you start - **Lauth installed, with an account.** It runs on Windows and macOS. New accounts get a 7-day free trial; the plans differ by the number of profiles, from 10 to 1,000. - **A proxy plan.** Residential Premium, ISP or mobile: all of them work in Lauth. The table further down says which one fits which profile. - **The four values:** host, port, username and password. In the QuanticData dashboard they are under My proxies, on the plan's page, in the Endpoint generator (for ISP plans, under Assigned IPs). **Try it on your own targets.** Every QuanticData account gets $2 of free API usage per month. [Start free — $2/month included](https://quanticdata.io/signup/?utm_source=blog&utm_medium=website&utm_campaign=blog-inline&utm_content=lauth-proxy-setup) · [Explore Residential Proxies from $0.80/GB](https://quanticdata.io/residential-proxies/) ## Where the proxy goes in Lauth Lauth has one place for the proxy of a profile, the Connection and proxy section, and two ways to reach it: - **A new profile:** Add new, then New profile. The steps are profile information, the network connection (Connection and proxy), device data and parameters, and cookies to import. - **An existing profile:** the three dots next to the profile, or a right click on it, then Edit profile preferences and Connection and proxy in the side menu. Lauth asks for the proxy as separate fields, not as one line. Its help centre reads a proxy written as protocol://address:port:name:password and enters each part, in that order, in its own field. With the QuanticData line it looks like this: ``` # the line from the generator, host:port:user:pass residentialpremium.quantumproxies.io:8080:USER-country-br-sid-p01-ttl-60m:PASS # the same line in Lauth's fields Proxy protocol HTTP IP Address/Host residentialpremium.quantumproxies.io Port 8080 User name USER-country-br-sid-p01-ttl-60m Access password PASS ``` The user name is the whole username string, with everything after the first dash: `-country-br` picks the exit country, `-sid-p01` names the session and `-ttl-60m` keeps it for 60 minutes. Copy it whole. A user name cut at the first dash still logs in, but the profile then leaves from a random country on a new IP at every request. ## Step by step: add a proxy to a Lauth profile ![The QuanticData Endpoint generator for a Residential Premium plan: Brazil selected, Session set to Sticky with a 60-minute TTL, HTTP protocol, output format host:port:user:pass and the preview line, with the username and password blurred](https://quanticdata.io/blog/lauth-proxy-setup/quanticdata-generator-brazil-sticky-line.webp) *Step 1 in the QuanticData dashboard: country, sticky session, protocol and format.* 1. **Generate the line.** In the QuanticData dashboard open My proxies, then your plan. In the Endpoint generator choose the Country (and a Region or City if the profile needs one), set Session to Sticky, set Session TTL (minutes) to at least the time the profile stays open and choose the Protocol. 2. **Open Connection details.** Under the Preview it lists the same proxy as four values, Host, Port, Username and Password, each with its own copy button: exactly what Lauth's fields want. 3. **Open the profile in Lauth.** A new one (Add new, New profile) or an existing one (three dots, Edit profile preferences), then Connection and proxy. 4. **Turn on Browse using proxy.** The proxy fields below it come alive. 5. **Choose the Proxy protocol.** The list has HTTPS, HTTP, SOCKS4 and SOCKS5: HTTP for port 8080, SOCKS5 for port 1080. 6. **Fill IP Address/Host and Port.** The host without `http://` or spaces, the port as a number. 7. **Turn on Proxy requires authentication** and paste the User name and the Access password. They are the proxy's credentials, not the login of any site. 8. **Leave URL to change IP (Optional) empty.** With QuanticData a new IP comes from a new session ID in the user name, explained further down. 9. **Click Test proxy, then Save editions.** The profile's time zone and language should follow the proxy's country. ![Connection details open under the generator preview: Host residentialpremium.quantumproxies.io, Port 8080, the username with -country-br and the session, and the password, each with a copy button, credentials blurred](https://quanticdata.io/blog/lauth-proxy-setup/quanticdata-connection-details-brazil.webp) *Step 2: the four values Lauth asks for, one by one.* ![Lauth Profile adjustments, Connection and proxy, redrawn with a QuanticData Residential Premium Brazil line: Browse using proxy on, Proxy protocol HTTP, IP Address/Host residentialpremium.quantumproxies.io, Port 8080, Proxy requires authentication on, User name USER-country-br-sid-p01-ttl-60m, URL to change IP empty, Test proxy and Save editions, with eight numbered steps beside it](https://quanticdata.io/blog/lauth-proxy-setup/lauth-connection-and-proxy-premium.webp) *Steps 3 to 9 in Lauth, redrawn with our values. The user name field shows only its start; the whole string is in it.* ### If your Lauth is in Portuguese Lauth comes from Brazil and many installs run in Portuguese. The fields are the same, in the same order: | English | Portuguese | | --- | --- | | Connection and proxy | Conexão e proxy | | Browse using proxy | Navegar utilizando proxy | | Proxy protocol | Protocolo do proxy | | IP Address/Host, Port | Endereço IP/Host, Porta | | Proxy requires authentication | O proxy requer autenticação | | User name, Access password | Nome de usuário, Senha de acesso | | URL to change IP (Optional) | URL para troca de IP (Opcional) | | Save proxy to my proxy list | Salvar proxy na minha lista de proxys | | Test proxy | Testar proxy | | Edit profile preferences | Editar preferências do perfil | ## Test proxy: what the Proxy data window says Test proxy opens the Proxy data window. It shows the IP the profile now uses, where that IP is, whether the connection to the proxy and the connection to the internet work, and whether an IP change URL is set. The country has to match the `-country-` in the user name. ![The Lauth Proxy data window after Test proxy, redrawn with a real check of a QuanticData Brazil sticky line: IP 45.236.x.x (masked), Location Sao Gabriel, RS (Brasil), Proxy connection OK, Internet connection OK, IP change URL Unconfigured, and the Close button, with five numbered notes beside it](https://quanticdata.io/blog/lauth-proxy-setup/lauth-proxy-data-check.webp) *A real check of the Brazilian line on 24 October 2026: São Gabriel, Rio Grande do Sul, time zone America/Sao_Paulo. IP masked.* IP change URL reads Unconfigured, and that is right for a QuanticData line. The same check is also on the link icon of the profile card in the profiles list, without opening the settings. ## One sticky session per profile An antidetect profile is meant to look like one person on one connection. A rotating proxy changes IP on every request, which is fine for scraping and wrong for a profile that logs in. A sticky session keeps one IP for as long as the session lives, and the session lives in the user name, so the fields never have to change once the profile is saved. ``` # profile 1: Brazil, one session for a working day User name USER-country-br-sid-p01-ttl-480m # profile 2: same plan, its own session (never reuse p01) User name USER-country-br-sid-p02-ttl-480m # profile 3: Brazil, open all day User name USER-country-br-sid-p03-ttl-1440m ``` Host, port and password stay the same in every profile; only the user name changes. Three rules cover almost every case: - **A different session ID in every profile.** Two profiles on the same user name share one IP, which is exactly what an antidetect browser is there to avoid. - **A lifetime longer than the work.** The generator accepts up to 1440 minutes, a full day. When the session ends, the next request gets a new IP, and a site can see that as a new login location. - **The country in the user name.** Without `-country-` the exit can be anywhere, and the profile's time zone will not match. With Session set to Sticky, the generator makes as many lines as the Quantity field says, ten by default, each with its own session ID, and Copy all or Download takes them out together. One line per profile. ![The Generate 10 sessions button in the QuanticData Endpoint generator with Copy all and Download, and the list of sticky lines ready to copy, credentials blurred](https://quanticdata.io/blog/lauth-proxy-setup/quanticdata-generator-brazil-sessions.webp) *One line per profile: every generated line has its own session ID.* ## Which proxy type for which profile | Proxy type | In Lauth | Good for | | --- | --- | --- | | Residential Premium | HTTP 8080 or SOCKS5 1080; one sticky user name per profile; country, region, city or ISP in the user name; username and password only | Most profiles: home IPs in the country you choose | | ISP | Fixed IPs from Assigned IPs; the IP in IP Address/Host, port 50100 (HTTP) or 50101 (SOCKS5); one IP per profile | Long-lived accounts that should keep the same address for months | | Mobile | mobile.quantumproxies.io (Global gateway), HTTP 8080 or SOCKS5 1080; -type-mobile and a session in the user name; IP whitelist available | Phone-first platforms and accounts tied to mobile networks | For a wider view of why each profile needs its own address, see [residential proxies for antidetect browsers](https://quanticdata.io/residential-proxies/for/antidetect-browsers/). The plans themselves are on the pages for [QuanticData residential proxies](https://quanticdata.io/residential-proxies/), [ISP proxies](https://quanticdata.io/isp-proxies/) and [QuanticData mobile proxies](https://quanticdata.io/mobile-proxies/). ## ISP proxies in Lauth In the dashboard, Proxy endpoints, Assigned IPs lists one fixed IP per line as IP:Port:Username:Password. Give each profile one line: the IP goes in IP Address/Host, the port in Port, and the username and password in the authentication fields. Choose HTTP when the panel's Protocol is HTTP / HTTPS (port 50100) and SOCKS5 when it is SOCKS5 (port 50101). Test proxy then shows the IP of the line itself, and URL to change IP stays empty: that IP does not change. For Brazilian addresses, see [ISP proxies in Brazil](https://quanticdata.io/isp-proxies/brazil/). ![The Assigned IPs panel of a QuanticData ISP plan: Protocol HTTP / HTTPS or SOCKS5, Output format IP:Port:Username:Password, five IPs masked with port 50100 and username USER, and the formatted output ready to copy](https://quanticdata.io/blog/lauth-proxy-setup/quanticdata-isp-assigned-ips-lauth.webp) *ISP plan: one fixed IP per line. Sample IPs masked.* ![Lauth Connection and proxy panel, redrawn with a QuanticData ISP IP from Assigned IPs: Proxy protocol HTTP, IP Address/Host 212.x.x.193 (masked), Port 50100, Proxy requires authentication on, User name USER, URL to change IP empty, with six numbered steps beside it](https://quanticdata.io/blog/lauth-proxy-setup/lauth-isp-ip.webp) *An ISP IP in a Lauth profile, one IP per profile. Redrawn screen, IP masked.* ## Mobile proxies in Lauth A mobile line goes in like a Residential Premium one, with `-type-mobile` in the user name. In the Mobile generator choose the gateway (Global, USA, EU or Asia) and the protocol, HTTP 8080 or SOCKS5 1080, then copy the four values. With SOCKS5, choose SOCKS5 in Proxy protocol too. The example below changes the proxy of an existing profile. ![The Lauth profiles list with the three-dots menu open on Edit profile preferences, and beside it the Connection and proxy panel, redrawn with a QuanticData mobile line: Proxy protocol SOCKS5, host mobile.quantumproxies.io, Port 1080, User name USER-country-br-type-mobile-sid-p02-ttl-60m, with six numbered steps](https://quanticdata.io/blog/lauth-proxy-setup/lauth-edit-profile-mobile-socks5.webp) *A mobile line in an existing profile, from Edit profile preferences. Redrawn screen with our values.* Mobile plans also offer IP whitelist authentication: add your computer's IP in the dashboard and use the host:port list it gives. In Lauth, leave Proxy requires authentication off for those lines, since the plan recognises your IP and no login is sent. Lauth's help centre lists the same two options, authentication by your real IP or by name and password. More on the plans for this market: [mobile proxies in Brazil](https://quanticdata.io/mobile-proxies/brazil/). ## Saved proxies and many profiles Save proxy to my proxy list keeps a proxy for later. Other profiles can then pick it from Use saved proxy, at the top of their Connection and proxy section, and the whole list can be edited or deleted under Proxy and connection in Lauth's general settings. Two cautions for antidetect work: - **Save one entry per session, not one per plan.** A saved Residential Premium entry carries one session ID; picked by five profiles, it puts five profiles on one IP. Store `-sid-p01`, `-sid-p02` and so on as separate entries. - **Prepare the lines first.** Lauth's help centre describes proxies added one at a time, so generate the lines with Copy all or Download, then fill one profile, or one list entry, per line. ## A new IP without touching the profile's other settings URL to change IP is meant for proxies that change their IP through a link, such as some 4G setups. With QuanticData Residential Premium and Mobile leave it empty: the IP is tied to the session ID in the user name, so a new session ID, for example `-sid-p02` instead of `-sid-p01`, is a new IP, and the old one keeps working until its lifetime ends. Change only the User name field and save. ISP proxies are static addresses by design: one IP per profile, for months. ## Lauth proxy not working: errors and fixes When the proxy cannot be reached, Test proxy does not come back with OK, and a page opened in the profile shows the browser's own error, ERR_PROXY_CONNECTION_FAILED. Lauth's help centre says to review the settings when one of the checks shows an error. These are the cases behind it, in the order to check. ![The error page a Lauth profile tab shows when it cannot reach the proxy: No internet, There is something wrong with the proxy server, or the address is incorrect, ERR_PROXY_CONNECTION_FAILED; beside it what to check in order: protocol matches the port, host without http://, user name copied whole, plan active with traffic left](https://quanticdata.io/blog/lauth-proxy-setup/lauth-proxy-connection-failed.webp) *The page a profile shows when the proxy is unreachable, and the order of the checks. Redrawn screen.* | What you see | Usual cause | Fix | | --- | --- | --- | | Test proxy fails, pages show ERR_PROXY_CONNECTION_FAILED | The protocol does not match the port: SOCKS5 on 8080 or HTTP on 1080 | HTTP with 8080, SOCKS5 with 1080; for ISP, 50100 and 50101 | | The same error, with the right protocol | A typo in IP Address/Host, `http://` in front of it, or a space | Copy Host again from Connection details and paste it alone | | The test fails although host and port are right | Proxy requires authentication is off, or the user name was cut | Turn the switch on and paste Username and Password again, whole | | It worked yesterday, fails today | The plan expired or its traffic is used up | Check the plan in My proxies: status, remaining traffic, expiry date | | Wrong country in Location | No `-country-` in the user name, or Worldwide chosen in the generator | Generate the line with a country and paste the new user name | | The IP changes in the middle of a session | The session lifetime ended, or two profiles share one session ID | A longer `-ttl-` and a different `-sid-` in every profile | One test outside the browser settles most cases in a minute. If this returns an address in the right country, the proxy works and the problem is in the profile's fields: ```bash curl -x http://residentialpremium.quantumproxies.io:8080 \ -U "USER-country-br-sid-test-ttl-10m:PASS" https://ipinfo.io/json ``` If the same command fails on your network but works from another one, a firewall or your provider is blocking the connection to the proxy port. ## HTTP or SOCKS5 in Lauth Both work for browsing, and every QuanticData network offers both. HTTP on port 8080 is the simpler choice and the one to start with. SOCKS5 on port 1080 passes any kind of connection, not only web pages, which matters for tools inside the profile that do not speak HTTP; the details are on the page for [SOCKS5 proxies](https://quanticdata.io/socks5-proxies/). What breaks a profile is never the choice itself, only a protocol that does not match its port. ## Before you run accounts A proxy changes where a profile's traffic comes from, not what the profile is allowed to do. Keep to each platform's terms and to the law where you work, and use one profile, one session and one identity per account. ### Sources & further reading - [Lauth help centre: how to add a proxy to Lauth (Portuguese)](https://ajuda.lauth.com.br/pt-br/article/como-adicionar-um-proxy-ao-lauth-isaqc9/) - [Lauth help centre: how to add my first profile](https://ajuda.lauth.com.br/en-us/article/how-to-add-my-first-profile-1svycvo/) - [Lauth help centre: connecting through 4G (Connection and proxy screen)](https://ajuda.lauth.com.br/en-us/article/connecting-through-4g-g3j2nz/) - [Lauth: plans and free trial](https://www.lauth.com.br/) - [RFC 1928: SOCKS Protocol Version 5](https://www.rfc-editor.org/rfc/rfc1928) ## FAQ Quick answers on lauth proxy setup. [Something else? Ask us](mailto:hello@quanticdata.io) ### How do I add a proxy in Lauth? Open the profile's Connection and proxy settings: in a new profile it is one of the creation steps, in an existing one use the three dots, Edit profile preferences. Turn on Browse using proxy, choose HTTP or SOCKS5 to match the port, fill IP Address/Host and Port, turn on Proxy requires authentication, enter the user name and password, click Test proxy and Save editions. ### Can I paste a host:port:user:pass line in Lauth? No, Lauth takes the proxy as separate fields: protocol, IP Address/Host, Port, User name and Access password. Split the line in that order, or open Connection details in the QuanticData generator, which lists the four values with a copy button each. ### Which proxy types does Lauth support? The Proxy protocol list has HTTPS, HTTP, SOCKS4 and SOCKS5. With QuanticData choose HTTP for port 8080 and SOCKS5 for port 1080; on ISP plans the ports are 50100 for HTTP and 50101 for SOCKS5. ### How do I test a proxy in Lauth? Click Test proxy in Connection and proxy. The Proxy data window shows the IP, its location, the proxy connection, the internet connection and the IP change URL. Proxy connection and Internet connection should read OK and the location should match the country in the user name. ### Can two Lauth profiles share one proxy? They can, but they should not: two profiles on the same sticky user name leave from the same IP, which links them. Give each profile its own session ID, and if you use Save proxy to my proxy list, save one entry per session rather than one entry for all profiles. ### Does Lauth work with mobile proxies? Yes. A mobile line goes in like any other: mobile.quantumproxies.io, HTTP 8080 or SOCKS5 1080, and a user name with -type-mobile and its own session. Mobile plans also offer IP whitelist authentication; for those lines leave Proxy requires authentication off. Leave URL to change IP empty: a new session ID gives a new IP. ### Is Lauth free? Lauth has a 7-day free trial for new accounts, then paid plans that differ by the number of profiles, from 10 to 1,000. The current terms are on Lauth's website. The proxy is separate and comes from your proxy provider. ## One sticky IP for every Lauth profile Residential Premium, ISP and mobile proxies with country targeting and sticky sessions up to 1440 minutes, HTTP and SOCKS5, copied straight from the endpoint generator into Lauth. [Start free — $2/month included](https://quanticdata.io/signup/?utm_source=blog&utm_medium=website&utm_campaign=blog-end&utm_content=lauth-proxy-setup) · [Explore Residential Proxies from $0.80/GB](https://quanticdata.io/residential-proxies/) ## Related reading - [XLogin Proxy Setup: Add, Test and Fix](https://quanticdata.io/blog/xlogin-proxy-setup/): Proxies · Open Setting proxy server, turn on Enable proxy server, pick HTTP Proxy for port 8080 or Socks 5 Proxy for 1080, click Paste proxy info, then Test Proxy and Save. Below: every step with the exact labels, one sticky session per profile, Residential Premium, ISP and mobile lines, bulk import, sites that skip the proxy and a fix for each error XLogin shows. - [ParseHub Proxy: Custom Proxies and IP Rotation](https://quanticdata.io/blog/parsehub-proxy-setup/): Proxies · Custom proxies in ParseHub live in the project Settings: tick Rotate IP Addresses, paste one host:port:username:password per line in Custom Proxies, save and click Run. Below: the exact steps, which runs use the proxies, Residential Premium, ISP and mobile lines, and a fix for each error on the Run page. - [Octoparse Proxy: Settings, IP Rotation, Fixes](https://quanticdata.io/blog/octoparse-proxy-setup/): Proxies · Octoparse takes your own proxies in Task Settings, Anti-blocking, Use my own proxies, Configure: HTTP only, IP:port one per line, no username or password, local runs only. Below: the task settings step by step, Residential Premium and ISP lines through Proxifier, mobile proxies straight in with the IP whitelist, IP rotation and a fix for each error. --- Source: https://quanticdata.io/blog/lauth-proxy-setup/ · Site index for AI: https://quanticdata.io/llms.txt