Where Multilogin Actually Breaks: App, Agent, Profile, Proxy or Website
Multilogin not working almost always means one of five layers failed: the desktop app, the local agent, a single profile, that profile’s proxy, or Multilogin’s own services. Check the official status page first to rule out a server-side incident, then work down that list in order. Most startup and connection errors clear with correct system time, a whitelisted antivirus, or a components refresh — not a full reinstall.
📌 TL;DR Executive Summary
- Core Takeaway: Most Multilogin failures sit in one of five layers — desktop app, local agent, profile configuration, proxy settings, or Multilogin’s own services. Each layer has a different fix, so identify the layer before you touch settings.
- Key Risk/Challenge: Reinstalling, deleting folders, or disabling your firewall before you know which layer failed wastes an afternoon and can break a configuration that was working yesterday.
- Recommended Solution: Check the status page, fix system time and timezone, whitelist the app in your security tools, then move through agent, profile and proxy checks in order. Keep one isolated profile per account so sessions never bleed into each other.
Triage First: Which Layer Failed?
When Multilogin not working is the report you are staring at, every symptom points at a specific layer. Match what you see on screen to the row below before you change anything — the wrong fix costs more time than no fix at all.
| Symptom | Likely layer | First check | Typical fix |
|---|---|---|---|
| App hangs on the loading screen or never opens | Desktop app | System clock and timezone | Enable automatic time and timezone sync, then restart the app |
| “Connection refused” on 127.0.0.1:45001 | Local agent | Is the desktop app open and showing Connected? | Start the app, wait for Connected, close any legacy agent |
| Profile fails to start | Profile configuration | Folder ID, profile ID, subscription status, proxy fields | Correct the IDs and proxy settings, confirm the plan is active |
| Browser opens but pages time out | Proxy / network | Proxy credentials and exit IP | Re-enter credentials, test on a different network |
| Website, login page or docs unreachable | Multilogin services | Component rows on the status page | Wait for the incident to clear; nothing local to fix |
Check Multilogin’s Status Before You Change Anything
Multilogin runs an official status page that tracks five components: API, Profiles, Fingerprint, Billing and Website Services. Each row shows Operational, Degraded or Outage, with incident reports underneath. If the row your workflow depends on is yellow or red, Multilogin not working is a vendor problem, and no local troubleshooting will shift it.
The Website Services row covers multilogin.com in real time — the homepage, the login page and the documentation — so it is the row to read when the site won’t load or sign-in bounces. Crowdsourced trackers give a second signal: Instatus Now polls the official page every minute and combines it with user reports. On 14 October 2026 it showed MultiLogin up, zero reports in the previous hour, and no spike over the last 30 days — a healthy day.
Treat third-party trackers as a hint, not a verdict. One general uptime monitor logged multilogin.com as Down on 7 October 2026 while the response came back in 62 ms; a fast response recorded as Down is a monitoring quirk, not an outage. Zero crowdsourced reports can also mean nobody has hit the problem yet. Read the official component rows first, then test the login page in a normal browser tab.
Multilogin Won’t Start: Fixes in Order of Effort
When Multilogin not working means the app opens halfway, freezes, or closes itself, work through these five steps in order. Each one is cheaper than the next.
1. Fix system time and timezone
Multilogin names clock and timezone desync as a common cause of startup failure. When your machine’s clock drifts, the app’s own certificate and session checks can fail before the interface draws. Turn on automatic time zone and automatic time synchronisation in your OS settings, reboot, and try again. It is a two-minute fix that clears a surprising share of stuck-on-loading reports.
2. Whitelist instead of uninstalling
Antivirus suites, firewalls, VPN clients and proxy utilities can all interfere with the app. Multilogin’s help article suggests uninstalling or disabling them, which leaves your machine less protected. Add Multilogin to your antivirus exclusion list and your firewall’s allow list first, then retest. Only if the app still fails should you pause a security tool briefly to confirm it is the culprit — and switch it straight back on.
The conflict pattern is the same across this product category, so if you have already debugged startup and proxy failures in another browser profile manager, the checks transfer directly — see this walkthrough of Adspower startup and proxy errors for the same sequence in a different tool.
3. Test a different network
Some ISPs block proxy providers, and a few block Multilogin’s own endpoints. Tether your laptop to a phone hotspot and open the app again. If everything works on the hotspot, your ISP or router is filtering traffic — check router-level blocking, DNS filtering, and any corporate network policy before you blame the software.
4. Refresh stuck components
Multilogin keeps components that update separately from the app, and a half-finished update can stop the app from starting. The official fix is to close the app, delete the deps folder inside the mlx directory, and reopen it. On Windows that is C:\Users\%username%\mlx, on macOS /Users/%username%/mlx, on Linux /home/%username%/mlx. The app pulls a fresh set of components on the next launch.
Refresh components only after time sync, security-tool exclusions and the network test have all passed and the app still fails. The re-download needs a stable connection and a few minutes.
5. Send logs to support
When nothing above works, archive the logs folder from the mlx directory and send it to Multilogin support with a clear description: what you clicked, what you expected, what appeared, and the exact time. Logs without context usually come back with a request for context.
Agent Not Connecting: Port 45001, Token Expiry and the One-Agent Rule
Multilogin’s own integrations talk to it through a local agent listening on port 45001. Three failures account for nearly all of them.
- Connection refused on 127.0.0.1:45001. This means the agent isn’t running. Open the desktop app and wait until it shows Connected before you retry — the agent starts with the app, not before it.
- Two agents at once. Running the legacy agent alongside the desktop app causes failures. Keep exactly one running and close the other completely, including background processes.
- Expired tokens. Multilogin API tokens expire in roughly 30 minutes. A job that ran fine yesterday can fail today simply because the session aged out. For anything long-running in that tool, use a long-lived token instead of a short-lived one.
Sign-in errors have a separate cause worth knowing: the API expects an MD5-hashed password, not plain text. A 400 or 401 during sign-in usually means the hash was missing or malformed rather than the password being wrong. Fix the hash before you reset anything.
Profile Won’t Start: The Four Checks That Actually Matter
A profile start request only succeeds when four conditions line up: valid folder_id and profile_id values, an active subscription, valid proxy settings, and the correct automation_type parameter. Miss one and the profile refuses to launch, often with a generic error that hides the real reason.
Two details trip people up. Never hardcode a browser port — use the port the app assigns once the profile has fully started, because the assignment changes between runs. And quick profiles are one-time sessions: stop one and its data is not saved, unlike a profile you created and kept. If a profile “lost” its logins, check whether it was a quick profile before assuming corruption.
Proxy Connection Errors Inside Multilogin
Proxy failures are the most common form of Multilogin not working inside a profile — the browser opens but loads nothing. Check the fundamentals first: protocol (HTTP or SOCKS5), port, and whether your provider authenticates by username and password or by whitelisted IP. Mixing those up produces a profile that starts and then times out on every page.
Test the proxy outside Multilogin before blaming the app. If the same endpoint fails in a plain browser or a request tool, the proxy is the problem. If it fails on your home connection but works over a hotspot, your ISP is blocking the provider. Reused, shared or geographically mismatched proxies also trigger platform verification screens, because the account suddenly signs in from a new country — that is expected platform behaviour, not a bug.
Diagnosing these follows the same order whatever tool you run: Dolphin Anty proxy errors trace from credentials to exit IP to network-level blocking.
Mixed-Up Logins: When Nothing Is Broken but Accounts Bleed Together
Sometimes the app starts, the agent connects, the proxy works — and you still get logged out of one account while using another, or a platform asks you to verify a device you have used for months. That is not a startup failure. It is session contamination.
A browser identifies you by a cookie jar, local storage and a device fingerprint. Open two accounts inside one profile and both share that single cookie jar: the second sign-in overwrites the first session cookie, so the site sees one browser managing two identities. Platform risk systems read that as account switching and respond with re-verification, a password prompt or a temporary lock on the older session. The same happens when a profile is cloned after it was already signed in, or opened on two machines at once.
Extensions carry sessions of their own inside a profile, which is why how Chrome add-ons work in profiles matters when logins behave oddly — an extension signed into one account can keep pulling that identity into a profile you thought was clean.
The rule that prevents all of it: one profile per account, with that profile’s cookie store, storage and fingerprint left untouched, and its proxy matching the region the account normally signs in from. Don’t clone a signed-in profile to duplicate an account, and don’t share one profile between two people on the same shift.
One boundary worth stating plainly: if an account has been restricted or suspended, the fix is the platform’s own appeal or verification process. Rebuilding a profile does not undo an enforcement decision, and routing around one turns a temporary problem into a permanent one.
How to Stop It Recurring
Most of these failures are preventable with a handful of standing settings, and none of them require new software.
- Keep automatic time and timezone sync switched on permanently. It costs nothing and removes a whole class of startup failures.
- Maintain a documented exclusion list in your antivirus and firewall, and review it after every OS or security-suite update — updates love to wipe exclusions.
- Update the app on a schedule rather than mid-project, and never delete the
depsfolder as a first move. - Record which proxy each profile uses, and don’t move a profile to a different country’s exit IP without a reason.
- Keep one browser profile per account per team member. Shared profiles and cloned sessions are where mixed-up logins start.
- Check the status page before you troubleshoot, every time. It separates a vendor incident from a local problem in one step.
If the recurring pain is session hygiene rather than software bugs, a manager built around per-account isolation fixes it structurally. Send.win keeps each profile’s cookies, storage, sessions, fingerprint settings and proxy separate, so signing into one account never touches another, and a profile shared with a paid teammate opens already signed in — no password changes hands. The honest trade-off: Send.win is deliberately hands-on. There is no automation interface on any plan, so every profile is opened, signed into and managed by a person working in the app. You can weigh that against Multilogin’s model in this Send.win vs Multilogin comparison.
🏆 Send.win Verdict
If your Multilogin errors keep tracing back to sessions bleeding between accounts rather than to the app itself, the fix is structural: one isolated profile per account, each with its own cookies, storage, sessions, fingerprint settings and proxy. Send.win runs that model in a desktop app for Windows, macOS and Linux, or entirely in a cloud browser hosted in Helsinki, Finland, so profiles do not share one browser identity — and a profile you share with a paid teammate opens already signed in. It stays a hands-on tool with no automation interface on any plan, so profiles are always opened and worked in by a person, but it removes the mixed-sign-in class of problems outright.
See Send.win plans — Pro from $19/mo (or $83.88/yr), Team from $49/mo, both with residential proxies included and a 7-day money-back guarantee on your first card purchase. Prefer to look first? The free cloud demo gives you a browser session with nothing to install.
Frequently Asked Questions
Is Multilogin down right now?
Check Multilogin’s official status page first: it reports API, Profiles, Fingerprint, Billing and Website Services as Operational, Degraded or Outage, with incident reports below. If every row is green and the login page opens in a normal browser tab, the fault is local. Crowdsourced trackers add context but can mark a site Down on a monitoring quirk, so treat them as a hint.
How Send.win Helps With Multilogin Not Working
Send.win is a browser profile manager for professionals and teams: every account gets its own isolated browser profile.
- Isolated profiles – separate cookies, storage and sessions per profile
- Fingerprint protection – each profile keeps its own consistent browser fingerprint, so profiles never share one browser identity
- Desktop app + cloud browser – native app for Windows, macOS and Linux, or run profiles in the cloud with no install
- Residential proxies included – on Pro and Team, with timezone and locale matched to the proxy
- Team sharing – share a signed-in profile with a teammate without sharing the password
Try the free cloud demo — no install — or download the desktop app. Paid plans start at $19/month, and your first card purchase is covered by a 7-day money-back guarantee (see pricing).
Why is Multilogin not working and stuck on the loading screen?
Clock or timezone desync is the most common cause: enable automatic time and timezone sync, then restart. If it still hangs, add the app to your antivirus and firewall exclusions rather than uninstalling your security software. When both of those pass and the interface still won’t draw, a stuck component download is the next suspect — delete deps and reopen.
How do I fix “connection refused” on 127.0.0.1:45001?
That message means the local agent isn’t listening. Open the desktop app and wait for Connected before retrying. Check that the legacy agent isn’t running alongside it, because two agents conflict. If it worked earlier and stopped, your token may have expired — tokens last roughly 30 minutes, so long-running work needs a long-lived token.
Can I run the legacy agent and the desktop app at the same time?
No. Running both causes connection and start failures, so close one completely, background processes included, and confirm the remaining one shows Connected before launching a profile. Check your startup items too — an old agent service that auto-launches is easy to miss after switching workflows.
Why does my Multilogin profile fail to start?
A profile start needs four things: valid folder_id and profile_id values, an active subscription, valid proxy settings, and the correct automation_type parameter. Generic errors usually hide one of those. Don’t hardcode a browser port either — use the port the app assigns once the profile has fully started, because it changes between runs.
How do I fix Multilogin proxy connection errors?
Confirm the protocol, port and authentication method first: HTTP or SOCKS5, and username-password or whitelisted IP. Then test the same endpoint outside Multilogin — if it fails there too, the proxy is at fault. If it fails only on your home connection and works over a phone hotspot, your ISP is blocking the provider.
What does deleting the deps folder actually do?
The deps folder holds components that update separately from the app, and a half-finished update there can stop it from starting. Deleting the folder and reopening the app forces a clean download. Try time sync, security-tool exclusions and a network test first, and do the delete on a stable connection so the download finishes.
Why do my logins get mixed up between accounts?
Two accounts inside one profile share a single cookie jar, so the second sign-in overwrites the first session cookie and the platform sees one browser using two identities — it answers with re-verification or a locked session. Cloning a signed-in profile does the same. Keep one profile per account, and don’t open the same profile on two machines.