Test Proxy fails or a profile will not open through its proxy: here is what MuLogin's help center points to, and the order to check it in.
Wrong type or fields. MuLogin accepts HTTP, HTTPS, SOCKS4, SOCKS5 and IPv6 as the proxy type, and needs the type, IP address and port, plus username and password if the proxy uses them. A type that does not match the proxy is the first thing its help page names.
The proxy has expired or run out. Its help page says many proxy IPs have a limited life, and asks you to check that the proxy account still has traffic or balance.
The network or a VPN in the way. MuLogin does not use bandwidth itself, so speed and reachability depend on the proxy and on your own connection.
In the profile's proxy settings (Add browser, then Proxy settings, per MuLogin's help), enter host and port exactly as shown in My assets, one value per field (or in the single field the app uses). The usual slips are a typo in the host, an extra digit in the port, or host and port swapped. Paste from My assets instead of typing.
Expected result The fields match My assets character for character.
Set the proxy type to the one the asset uses; the list offers HTTP, HTTPS, SOCKS4 and SOCKS5. Each IP in My assets is issued with one protocol: HTTP on port 2222, SOCKS5 on port 3333. In our test of 4 November 2026 a static ISP per-IP lease also worked over the other protocol on its own port with the same login, but a per-GB asset did not, so use the protocol the asset shows.
Expected result Protocol and port point to the same service as the asset.
Copy both in full. A space copied at the end, a missing special character or a login from another asset is enough to fail. If the failure is a 407 or a sign-in prompt rather than a plain connection error, the address is reachable and credentials are the thing to fix.
Expected result The check no longer says the credentials were refused.
Turn off any VPN or other proxy on the computer and try again, and check that a firewall or antivirus is not blocking the port. MuLogin's help says a hotspot, a local VPN or SSR are used instead of the profile's proxy settings, so when you are testing a profile proxy, switch them off to test one route at a time.
Expected result The same proxy works once nothing else is sitting between the computer and it.
Open My assets and check that the lease is still active and, on per-GB assets, that traffic is left. Then run the curl test below from the same computer. If curl also fails, the problem is the IP or its lease, not the app.
Expected result curl returns JSON with an exit IP.
Check Type, IP and port in the proxy settings against My assets.
Fix Re-enter them. MuLogin also accepts a pasted line in the form IP:port:username:password after you choose the type, so you can paste the whole line from My assets.
Check Whether the exit works for that site, and your own network.
Fix Try a different site, then the same proxy on a different network. MuLogin's help suggests asking the proxy provider if only some sites fail.
Check The lease end date and the traffic left in My assets.
Fix Renew or top up. If the lease is active and curl fails too, open a Support ticket with the order number.
# HTTP asset (port 2222)
curl -x http://LOGIN:PASSWORD@HOST:PORT https://ipinfo.io/json
# SOCKS5 asset (port 3333; socks5h also resolves DNS through the proxy)
curl -x socks5h://LOGIN:PASSWORD@HOST:PORT https://ipinfo.io/jsonExample only: replace the placeholder values with your own. Use the line that matches the asset protocol.
Run the curl test below from the same computer. Success means the IP works and the cause is in the profile settings or in how MuLogin reaches the network. Failure means the IP, the lease, or your network.
To confirm the exit, open a lookup page through the proxy and compare the country with the asset. The guide on checking where a proxy exits explains how.
Static ISP assets give you a fixed IP for the lease term, which fits one profile per account. The first setup is on the MuLogin integration page; if you only need the error fixed, the steps below are enough.
From mainland China, start Fast Connect from the Tools & checks page first and keep it open while you use the proxy.
Open My assets in the console and click the IP. Note the protocol (HTTP or SOCKS5) and copy host, port, username and password.
Enter the four values in MuLogin and choose the same protocol. Do not type them by hand if you can paste.
Run the curl test above from the same computer. If curl returns JSON with an exit IP, the IP works and the fault is in the app settings or the app network.
If curl fails too, check that the lease is still active, then open a Support ticket with the order number: a failed IP or proxy is fixed by reissuing it.
Static ISP per-IP leases run 1, 3, 7, 30, 60 or 90 days, from US$0.50 for 1 day to US$7.99 for 30 days. There is no free trial; the smallest purchase is one IP for one day.
MuLogin's help center says it comes from wrong proxy settings or type, an expired IP, no traffic or balance left, or a slow network. It does not by itself tell you which one.
HTTP, HTTPS, SOCKS4, SOCKS5 and IPv6, according to its help center.
Yes. Its help describes IP:port:username:password after choosing the type, or the same with a type prefix such as HTTP://.
Possibly the exit for that site, or your network. Try another site and another network; if only some sites fail, ask the proxy provider.
Add a Proxy302 IP to a MuLogin profile: Basic Configuration, Proxy settings, pick the type, paste IP:Port:Username:Password, click Test proxy information, save.
Set up a proxy in AdsPower, BitBrowser, GoLogin, Kameleo, Hidemium or GenLogin: one IP per profile, where each field goes, and what a failed proxy check really means.
The ERR_PROXY_CONNECTION_FAILED error appears in Chrome and Edge when the browser cannot establish a connection with a proxy server.
When a proxy won't connect or is slow, check six things first: address, port and type, login and password, one proxy app only, the antidetect browser port, the exit IP.
Official documentation · Confirmed on:
Read on 11 November 2026: set the proxy in Add browser > proxy settings; type HTTP, HTTPS, SOCKS4 or SOCKS5, IP address and port, username and password if used; click the test-proxy button, then save.
Official documentation · Confirmed on:
Read on 11 November 2026: causes are wrong proxy type or settings, an expired or slow proxy IP, and no traffic or balance left; the page suggests checking the provider account, retrying a nearby IP, and asking the provider about whitelists or blocked sites.
Official documentation · Confirmed on:
Read on 11 November 2026: supported types are HTTP, HTTPS, SOCKS4, SOCKS5 and IPv6.
Official documentation · Confirmed on:
Read on 11 November 2026: paste IP:port:username:password after choosing the type, or the same with a type prefix such as HTTP://.
Official documentation · Confirmed on:
Read on 11 November 2026: a hotspot, local VPN or SSR can be used without filling the profile proxy settings, one profile at a time; the page also says MuLogin itself does not use bandwidth (from the unreachable-proxy page).
Product observation · Confirmed on:
Product facts file of the site (checked 18-19 October 2026, protocol test of 4 November 2026): protocols and ports, lease terms and prices in US$, no free trial, failed assets reissued.
Create an account, top up once, then pick rotating residential, static ISP or datacenter IPs and have one running in your browser within minutes.
