Is LastPass not working on Firefox for you? You’re not alone. Many users occasionally face issues with the LastPass browser extension in Firefox, including login problems, missing icons, or autofill.
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Is LastPass not working on Firefox for you? You’re not alone. Many users occasionally face issues with the LastPass browser extension in Firefox, including login problems, missing icons, or autofill failures. When LastPass doesn't work properly, it can disrupt access to critical passwords and workflows.
In this article, we’ll explore the most common causes and effective fixes when LastPass is not working on Firefox.
Here are some symptoms users often experience:
The LastPass icon is missing from the Firefox toolbar.
The extension won’t open or load properly.
Autofill isn't working on websites.
You can’t log in to your LastPass vault.
The extension shows as “not connected”.
Let’s break down the most reliable solutions for each scenario.
If LastPass is not working on Firefox, the extension may not be active:
Click the menu (☰) in Firefox and go to Add-ons and themes.
In the Extensions tab, search for LastPass.
Ensure it is installed and enabled.
If not, visit the Firefox Add-ons page to download and install it again.
After installing, restart Firefox and check if the icon appears in the toolbar.
Outdated software can cause compatibility problems:
Go to Menu > Help > About Firefox to check for browser updates.
Make sure the LastPass extension is also updated to the latest version via the Add-ons Manager.
Keeping everything up to date can resolve many “LastPass not working on Firefox” issues caused by bugs or deprecated features.
Corrupted cache files can interfere with extensions like LastPass:
Go to Settings > Privacy & Security > Cookies and Site Data.
Click “Clear Data” and select Cache and Cookies.
Restart Firefox and try using LastPass again.
This step often resolves issues with the extension not loading or staying logged in.
If LastPass isn’t working on Firefox, other extensions might be interfering:
Disable other extensions temporarily to identify any conflicts.
Avoid using privacy extensions (like ad blockers or script blockers) that may block LastPass scripts.
Under Settings > Privacy & Security, ensure Enhanced Tracking Protection is not blocking LastPass on websites.
You can also add LastPass to your list of exceptions in strict privacy settings.
Sometimes, a clean reinstall solves the problem:
Go to Add-ons > Extensions, click the three dots next to LastPass, and select Remove.
Restart Firefox.
Reinstall LastPass from the official Firefox Add-ons site.
This can fix issues like the LastPass button being unresponsive or not syncing properly.
If you’ve tried everything and LastPass is still not working on Firefox, it could be a backend issue:
Visit the LastPass Status Page to check for system-wide outages.
Review recent posts in the LastPass community forums or the Firefox support forum.
LastPass occasionally releases updates that temporarily affect browser compatibility.
Still stuck? Reach out to LastPass Support for help with account-specific or advanced technical issues. They can also guide you through error logs and browser diagnostics if needed.
When you encounter LastPass not working on Firefox, the solution often lies in a quick fix: updating the extension, clearing cache, or adjusting privacy settings. By following the steps above, you can get LastPass back up and running in Firefox and ensure uninterrupted access to your passwords.