# Posted on the wrong client account: why and what now > A post lands on the wrong client's account because two clients share one browser and every window looks the same. Delete it, tell both, then label windows. Source: https://mosaicbrowser.com/blog/wrong-client-account-post ## Posting to the wrong client's account, and how it happens A post lands on the wrong client's account because two clients share one browser and every window looks the same. Delete it, tell both, then label windows. ![640px: The profile's name, drawn left of the address bar](https://mosaicbrowser.com/covers/wrong-client-account-post.webp) Posted on the wrong client account? Take it down now, look in the scheduler for anything else lined up there, and tell both clients today. Then look at your screen. Usually the other client was one tab away in a browser where nothing said whose account was open, and no amount of "be more careful" fixes a window with no label on it. ## Posted on the wrong client account: the first hour Delete first. A deleted post leaves the feed; it doesn't leave anyone's notifications, shares, quotes or camera roll. If it was up for ten minutes, somebody saw it. Should you edit instead? It's tempting when the caption is nearly right. We wouldn't. Platforms differ on what can be edited, some show edit history to anyone who taps it, and a reworded post is still another client's post. Then write two messages: - **To the account owner:** what went out, at what time, when it came down. - **To the client whose post it was:** their offer or launch date was public on someone else's page, for how long, and what you've changed. Keep both short. "Our mistake, here's the timeline, here's the fix" is the whole content. ## Three ways the wrong account ends up in front of you The first is one login reaching many clients. Agencies are meant to work that way on Meta: your own Facebook profile, partner access to each client's business portfolio, and a selector at the top of the screen that decides which client's Page you are posting as. The selector remembers the last one you used. The second is tabs. Two tabs both say Instagram, with the same icon and the same title, and the only difference is the avatar in a corner of the page. The third is a scheduling tool with a default account, where the post goes to whichever account was selected the last time the composer was open. All three have the same shape. The thing that decides where the post goes is small, inside the page, and was set by an earlier action you no longer remember. Mosaic is a desktop app Email yourself the link and open it on your computer. How it works: Logins and 2FA codes ## Five identical windows Keeping each client's logins in a separate browser profile solves the tabs problem, and it created one of its own for us. Every Mosaic profile is its own browser with its own cookies, fingerprint and proxy. Five profiles open meant five windows that looked exactly alike. Chrome normally names its windows, but only once a second profile exists in the same browser. A Mosaic profile has its own data directory, so the browser holds exactly one profile and Chrome correctly finds nothing to tell apart. The fix had to go into the engine. Patch `0141` adds a switch that draws the profile's name in a chip immediately left of the address bar, and the app passes it on every launch. ![Three Mosaic profile windows stacked, each with its own name in a chip beside the address bar: Google Ads, Amazon buyer, Facebook Ads](https://mosaicbrowser.com/shots/windows-arranged.png) *Each window says whose it is, before you type anything* Two faults in the first version were found by photographing three windows, not by reading the code. Both would have shipped. Chrome's ASCII-only reader returns an empty string for any name with a character outside ASCII, so a profile whose name had an em dash in it drew no chip at all. And the toolbar's layout order runs the opposite way to how it reads, so when the window got narrow the chip was the first thing to go. With both fixed, we resized a window from 480 to 1280 pixels and checked each width: the chip is there from 640 up. Every desktop profile opens at 1280 pixels or the width of the screen, whichever is smaller. An Android profile opens at its phone's width, which is narrower, so it has no chip. ## Name it so the chip means something A chip saying "Profile 7" is a label you still have to decode. We name profiles with the client's code first, then the platform and role, so the window, the ad account and the export start with the same letters (the full scheme is in [naming a client's ad accounts to match its profiles](https://mosaicbrowser.com/blog/ad-account-names-match-profiles)). Group each client's profiles in a project of their own, and a desktop shortcut opens one profile, that client's, in one click. ## Where a labelled window does not help Case one, partner access, gets nothing from the chip. Every client Page you manage on Meta sits behind your own login, in one profile, so that window's chip says your name. That's by design ([partner access in a business portfolio](https://mosaicbrowser.com/blog/business-portfolio-not-business-manager) explains why agencies work this way), and there the selector inside Meta Business Suite stays the only label. Read it before every post. We haven't found a shortcut for that. The chip earns its place on the logins with no partner model at all: a client's Shopify admin, their Mailchimp, the one account they gave you a password for because the platform offers nothing better. Mosaic keeps the accounts you're entitled to run apart. It doesn't change what any platform allows. We set those profiles up in the [first hour with a new client](https://mosaicbrowser.com/blog/client-onboarding-first-hour), before anybody posts. ## Questions ### What should I do if I posted on the wrong client's account? Take it down, then check the scheduler for anything else queued on that account. After that, two messages: one to the client whose account carried it, one to the client whose post it was. Deleting won't recall notifications or screenshots. ### Can I edit a post instead of deleting it? Sometimes, but followers got the first version in their notifications, and an edit history can show it. If the post belonged to a different client, we'd delete it. ### How do agencies stop posting to the wrong client account? Give each client's logins their own browser, put the client code at the start of its name, and make the window show that name. Where one login reaches many clients (Meta partner access, say), the page selector is the only label, so read it. ### Does Mosaic show which profile a window belongs to? Yes. Tesseract Chrome draws the profile's name in a chip to the left of the address bar. It appears in any window 640 pixels wide or more, which every desktop profile is when it opens. ## Related [Name the browser profile the way you name the ad account](https://mosaicbrowser.com/blog/ad-account-names-match-profiles): Our naming convention for client ad accounts: ACME-DE-EUR, code first, since a cut-off name keeps its start. The browser profile is ACME-FB-Ads. [Naming 300 browser profiles so you can still find one](https://mosaicbrowser.com/blog/naming-hundreds-of-profiles): Name each profile client code, platform, role, in that order, so one search finds a client and one sort groups them. Status goes in a tag, not the name. [The first hour in the browser with a new client](https://mosaicbrowser.com/blog/client-onboarding-first-hour): A social media client onboarding checklist for the browser: ask for partner access, not passwords, then a project, a proxy in their market and their 2FA. [Business Manager is now a business portfolio. What changed](https://mosaicbrowser.com/blog/business-portfolio-not-business-manager): Meta renamed Business Manager to business portfolio and moved nothing. An ad account still belongs to the portfolio it was made in, so check whose that is.   [Switching between client accounts in seconds, not sign-ins](https://mosaicbrowser.com/blog/switching-between-client-accounts): Signing out and back in is where a client switch costs minutes and where wrong-account posts start. A shortcut per client profile makes it one double-click. [TikTok One for agencies: creator access without logins](https://mosaicbrowser.com/blog/tiktok-creator-marketplace-agencies): TikTok One, the old Creator Marketplace, lets an agency run a creator's post as a Spark Ad from its own ad account. The creator approves; no password. ## Mosaic, on your own computer The browser this blog is about: its own Chromium, fingerprints from real machines and a proxy exit per profile. Free holds 3 profiles. Pro is $49 a month for any number. Mosaic is a desktop app Email yourself the link and open it on your computer.