How to Migrate MoreLogin to JustBrowser Without Losing Your Sessions

If an antidetect subscription lapses or a payment bounces, the profiles you warmed up over months can end up out of reach until you pay.

Cloud-hosted profiles have that exit problem. When you decide to leave, or get locked out by accident, extracting warmed-up profiles gets messy fast. Moving them while you still have access is far less painful.

That's what this guide covers: how to migrate MoreLogin to JustBrowser with cookies carried over, proxies rebound, and fingerprints checked before you touch a production account. Migration is tedious. It's also a one-time cost.

Here's the process.

What You'll Have at the End

A working migration: cookies transferred, proxies rebound, fingerprints checked on CreepJS and BrowserLeaks before you touch production accounts.

This isn't instant. Budget 15-20 minutes per high-value profile. It gets faster once you find a rhythm. The upfront tedium beats losing accounts you spent months warming.

Prerequisites

MoreLogin account with active access to profiles you're migrating (if you've lost access, you may need to resubscribe temporarily)
JustBrowser installed — 7-day free trial, card required — cancel any time in the seven days and you are not charged
Cookie export extension (Cookie-Editor or another one you trust)
Proxy credentials documented — host, port, username, password for each profile
60-90 minutes for your first batch of 3-5 profiles

There's one plan, $9.99/month or $99.99/year, with unlimited profiles, so you don't need to ration profiles during the migration.

Step 1: Document Your MoreLogin Setup

Skip this and you'll regret it in step 3.

Open MoreLogin and build a migration spreadsheet. For each profile:

Profile Name	Platform	Proxy Provider	Proxy Host:Port	Timezone	Last Active	Notes
AMZN-Seller-02	Amazon	Provider A	host-a.example.com:7000	America/Chicago	2026-07-19	Critical
FB-BM-Client-A	Facebook	Provider B	host-b.example.com:12323	America/New_York	2026-07-20	Client account
TIKTOK-Test	TikTok Shop	Provider C	host-c.example.com:8001	America/Los_Angeles	2026-07-10	Low stakes

Why document like this? Because proxy IP consistency is the thing that matters. More than fingerprints. More than canvas hashes. If your Amazon account has logged in from a Chicago residential IP for six months, and you accidentally configure Dallas in JustBrowser, you've triggered a location anomaly. The spreadsheet prevents expensive mistakes.

Step 2: Export Cookies from MoreLogin

If your version of MoreLogin offers a cookie export for the profile, use it. Menu names change between versions, so check MoreLogin's help docs if you can't find it.

Method A: MoreLogin's export feature

Open your profile in MoreLogin
Navigate to the platform (Amazon, Facebook, wherever)
Confirm you're logged in — stale sessions export worthless cookies
Export the profile's cookies in JSON format
Save: amzn-seller-02-cookies.json

Method B: Browser extension (backup)

If MoreLogin's export hiccups:

Open the profile
Navigate to the platform, confirm login
Open Cookie-Editor → Export → JSON
Save the file

Critical: Export while actively logged in. If your last session was two weeks ago, open the profile, confirm login state, then export. Server-side session expiration makes old cookie exports useless.

For each profile, you should now have: cookie file + proxy credentials + documented settings.

Step 3: Create Matching Profiles in JustBrowser

Open JustBrowser. New profile. Here's where precision matters.

Settings that MUST match your MoreLogin profile:

Operating System: MoreLogin was Windows 11 → JustBrowser is Windows 11. macOS stays macOS.
Timezone: Must match proxy location. Chicago proxy = America/Chicago.
Language: Must match proxy location. US proxy = en-US primary.
Screen Resolution: Match exactly. 1920x1080 → 1920x1080.

Settings that can differ (they'll regenerate):

Canvas hash — different engine, different hash. Normal.
WebGL renderer — will regenerate. That's fine.
Audio fingerprint — same deal.

Here's the thing most people get wrong: they stress over canvas hashes when they should be triple-checking proxy config. Debugging a canvas mismatch is an easy way to burn an afternoon on something that doesn't matter. Platforms tend to weight IP + timezone consistency far more than hardware fingerprint values. Browsers legitimately change fingerprints when users update or reinstall — that's just... normal software behavior. What doesn't change is your network location pattern. Our WebGL fingerprinting breakdown covers what detection systems actually prioritize.

Proxy configuration:

Enter your existing proxy credentials exactly. Same host, same port, same auth.

JustBrowser has a built-in proxy tester. Use it. If the IP or country differs from what you documented — stop. Debug before continuing.

One wrong digit in a proxy port is enough to put a valuable account on the wrong network path. Check every field.

Open the new profile's cookie import in JustBrowser and load the JSON file.

After importing: launch the profile, navigate to the platform, check login state.

Logged in? Move to fingerprint validation.

Logged out? Common causes:

Expired cookies — Session expired server-side. Re-login required.
Format mismatch — If the import rejects the file, strip each cookie to the essential fields (name, value, domain, path, expiration) and try again.
Domain mismatch — Cookies for .amazon.com don't apply to amazon.de. Match domains.

Re-logging isn't catastrophic. As long as IP and timezone are consistent, one "new device" login looks like... a new device. Normal human behavior. Have 2FA recovery codes ready though — some platforms require re-verification on fingerprint changes.

Step 5: Validate Fingerprints Before Production Use

Don't skip this. You'll want to. It's the step that catches the mistakes from step 3.

Before using the migrated profile on any account that matters:

Launch the profile in JustBrowser
Navigate to CreepJS
Wait for the full report to finish
Check the Lies section — should be empty or minimal
Check the headless and stealth readings

What you're looking for:

Lies section: Empty is ideal. Red entries = detectable inconsistencies.
Headless and stealth: JustBrowser's published CreepJS result is 0% on both. A higher reading on a migrated profile means something in its setup needs a second look.
Consistency: Run the test twice. Same hashes both times? Good. Randomizing = stability issue.

Also run BrowserLeaks and check that WebRTC isn't leaking your real IP.

Failing checks? Verify timezone vs proxy location first (the most common cause), then language settings, then OS consistency.

Your cookies carry session state. But account-age signals extend beyond cookies.

JustBrowser includes a cookie warm-up engine that visits 127 curated sites to build realistic browsing history. Run it on migrated profiles.

For the first 48-72 hours post-migration:

Keep activity patterns consistent with your previous behavior
Don't suddenly run 10x more actions than usual
Avoid heavy automation until you've confirmed stability

If you're using Playwright or Puppeteer for automation, the antidetect REST API guide covers programmatic profile control.

Step 7: Gradual Production Rollout

Don't migrate your most valuable profile first. It's the one you can least afford to debug live.

Pick 2-3 profiles that matter but aren't critical. Run them in JustBrowser for a full week with normal activity. Watch for:

Unusual CAPTCHA frequency
Verification prompts you didn't get before
Session instability

No issues after a week? Migrate the rest. Problems? Debug before touching high-value accounts.

Common Errors and Fixes

Cause: Cookies were stale, or exported while logged out.

Fix: Log back in from JustBrowser. As long as IP + timezone match, one new-device login is normal. Have 2FA codes ready.

Proxy connection fails

Cause: Credentials wrong, or provider requires IP whitelisting.

Fix: Double-check every field. Some providers authenticate by allowlisting your connection IP instead of a username and password. If you're on a different machine than you used with MoreLogin, add it to your provider's allowlist. Our ISP proxy tutorial walks through proxy setup in JustBrowser.

CreepJS shows lies or a headless reading

Cause: Fingerprint settings don't match proxy location, or OS/language/timezone inconsistency.

Fix: Verify timezone = proxy timezone. Language = proxy country language. OS = consistent. Disable extensions during testing — some modify fingerprint APIs detectably.

Profiles out of reach after a MoreLogin lapse

Cause: Your MoreLogin plan expired, and the profiles you need aren't available on what's left of your account.

Fix: Check MoreLogin's current terms. If resubscribing for a month restores access, do that and finish the migration. Extract everything before letting it lapse again. This is the cloud-dependency trap.

The Math

Check MoreLogin's pricing page for their current plans, since tiers change. JustBrowser is one plan: $9.99/month or $99.99/year, with unlimited profiles, unlimited cloud sync and free team seats, plus a local REST API. There's no per-profile pricing, and per-profile pricing is the model that punishes you for scaling.

JustBrowser's 7-day free trial requires a card, and you're not charged if you cancel within the seven days.

Next Steps

Once test profiles run clean for a week:

Batch migrate remaining profiles — it gets faster once the first few are done.
Run parallel for a month — Keep MoreLogin active until confident. Don't rage-cancel.
Set up ongoing fingerprint checks — Detection evolves. Monthly CreepJS runs keep you ahead.

Migration is tedious, and nobody enjoys it. But depending on one vendor's cloud for profiles you can't replace is a risk worth ending. Keep an encrypted export of anything that matters.

Take your time. Validate everything. And don't migrate your most valuable profile first.

Frequently Asked Questions

Will switching from MoreLogin to JustBrowser trigger security checks on my accounts?

It can. Some platforms ask you to log in again or re-verify when they see a new browser. Keeping the same proxy, timezone and language means the main change they see is the browser itself, not your location. Have 2FA recovery codes ready, and move low-stakes profiles first.

Can I export MoreLogin profiles directly to JustBrowser?

There's no direct transfer from MoreLogin to JustBrowser. Export cookies with MoreLogin's own export or a cookie extension, document proxy credentials, then recreate profiles in JustBrowser with matching settings. Budget 15-20 minutes per high-value profile.

Should I migrate all profiles at once or in batches?

Batches. Start with 3-5 non-critical profiles and run them for a week in JustBrowser. Watch for unusual CAPTCHAs or verification prompts. Clean week? Migrate the rest. Don't touch your highest-value accounts until you've validated the workflow on low-stakes ones.

Try JustBrowser

Native custom-Chromium antidetect browser — not extension-based. Real C++ engine patches at the canvas / WebGL / audio / font / screen layer, so 40+ identity parameters are genuine, not faked. Local REST API + CDP for Playwright, Puppeteer, Selenium. 7-day free trial, card required — then $9.99/month or $99.99/year, unlimited profiles, free team seats.

Get started → · How it differs from Multilogin / GoLogin / AdsPower