Update blocks every open tab and loses tab groups
A 3.3.6 update wrongly marked every open tab as unsafe, blocking pages and losing tabs and tab groups.
Tier I · Proven The best-established problems.
9 public reports · first reported 1 October 2026 · last reported 10 October 2026
What's going wrong
After a recent update to the Malwarebytes Browser Guard add-on for Firefox, many users found that every open tab was suddenly blocked, including pinned tabs.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 9 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.