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uk Technology & digital loss

What to do if…
your browser bookmarks, history, or extensions disappear after an update

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy UK guide

Short answer

Stop making changes, do not reset or reinstall the browser, and first check whether you have been moved into the wrong browser profile or signed out of sync. The safest aim is to find the copy that still has your bookmarks, history, or extensions before anything overwrites it.

Do not do these things

  • Don’t uninstall or reinstall the browser yet; it may make local recovery harder.
  • Don’t use “Reset settings”, “Refresh”, “Delete profile”, or “Create new profile” as a first move.
  • Don’t turn sync on and off repeatedly across several devices.
  • Don’t reset synced data, delete cloud data, or clear browser data while you are unsure which copy is correct.
  • Don’t run “cleanup” tools that delete browser profiles, caches, or old user data.
  • Don’t assume everything is gone; this is often a profile switch, sign-out, sync problem, disabled extension, or hidden bookmarks folder.

What to do now

  1. Freeze the situation.

    • Close extra browser windows.
    • Do not clear history, cache, cookies, passwords, or site data.
    • If this is a work, school, or managed device, pause before changing profiles or sync settings and contact IT if you can.

  2. Check whether you are in the right browser profile.

    • Look for the profile icon, usually near the top right of the browser.
    • If you see Guest, a blank profile, a work profile, or an unfamiliar name, switch back to your usual profile.
    • Open each existing profile briefly and check whether your bookmarks, favourites, history, or extensions appear there.

  3. Check whether you have simply been signed out.

    • Open the browser’s profile or sync settings.
    • Check whether you are signed in with the account you normally use for that browser.
    • If there are several possible accounts, check the account name carefully before signing in or changing sync.

  4. Find a safe reference copy before changing sync.

    • Check another phone, laptop, tablet, or desktop where the same browser account is normally used.
    • If that device still has the correct bookmarks or favourites, stop using it for now and do not delete, tidy, or resync anything on it.
    • Consider exporting bookmarks from that good device before trying bigger fixes on the empty one.

  5. Check the bookmark or favourites manager.

    • In Chrome, open Bookmark Manager and check the bookmarks bar, “Other bookmarks”, and any imported folders.
    • In Edge, open Favourites and check whether you are in the expected profile and whether favourites sync is enabled for that profile.
    • In Firefox, open the Bookmarks Library and check recent folders before restoring anything.

  6. Use built-in restore only where the browser offers it.

    • In Firefox, use the Bookmarks Library “Restore” option to look for automatic bookmark backups.
    • Be careful: restoring a Firefox bookmark backup can replace the current bookmark set, so choose the dated backup deliberately.
    • In Chrome or Edge, do not assume there is a simple undo or restore button; first check profiles, sync, exported files, and other devices.

  7. Check whether extensions are disabled rather than removed.

    • Open the browser’s extensions or add-ons page.
    • Look for disabled toggles, warnings, or extensions hidden under a different profile.
    • If the browser says extensions are disabled “by your organisation”, treat it as a managed-device policy issue and contact IT.

  8. If the browser also looks compromised, secure the account from a trusted device.

    • Warning signs include unknown extensions, changed search engine or homepage, unexpected sign-outs, unfamiliar devices, or password alerts.
    • Change the password for the browser account, such as Google, Microsoft, or Mozilla, from a trusted device.
    • Turn on two-step verification if available and review recent sign-ins or connected devices.
    • If money, accounts, or personal information have been misused, or you believe a cyber crime or fraud has happened, use Report Fraud in England, Wales, or Northern Ireland. If you are in Scotland, contact Police Scotland on 101.

What can wait

  • You don’t need to decide today whether to switch browsers.
  • You don’t need to rebuild all bookmarks manually while there may still be a recoverable copy.
  • You don’t need to install recovery software, cleanup tools, or new extensions right now.
  • You don’t need to reorganise bookmarks, tidy extensions, or optimise settings during the first check.
  • Exporting bookmarks for future peace of mind can wait until you have found the best available copy.

Important reassurance

This can look like a total loss, but it is often caused by the browser opening the wrong profile, signing out of sync, hiding a bookmarks folder, or disabling extensions after an update. Slowing down reduces the chance of overwriting the copy that may still exist.

Scope note

These are first steps to stabilise the situation and avoid avoidable data loss. Later recovery may need browser-specific help, device backups, employer or school IT support, or a careful look at local profile folders.

Important note

This is general information, not professional IT, legal, financial, security, or technical support advice. Follow your organisation’s rules on managed devices, and use official reporting routes if you think criminal access, fraud, or phishing is involved.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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