Firefox PC not responding when opening new tab
When opening new tab or opening bookmark, sometimes Firefox PC not responds. It lasts anything from 5 seconds to a minute. Then Firefox continues to work.
All Replies (1)
Hi! A delay of 5 seconds to a minute when opening a new tab or bookmark is not expected behavior. Since Firefox eventually recovers, it would be useful to check whether a particular extension, tab, or system resource issue is causing the temporary freezes.
Please try the following:
1. Start Firefox in Troubleshoot Mode using ☰ → Help → Troubleshoot Mode… and see if the problem still occurs. This temporarily disables extensions and some customizations. 2. When Firefox becomes unresponsive, if possible press Shift + Esc to open Firefox's Task Manager and check whether a particular tab or extension is using a large amount of CPU or memory. 3. Check whether the problem also happens with a completely new tab, or only when opening certain bookmarks/websites. 4. Make sure Firefox and your operating system are fully updated.
If the problem continues in Troubleshoot Mode, please let us know your Firefox version, operating system and version, and approximately how many tabs and extensions you normally have open. It would also be helpful to know whether the entire computer slows down or only Firefox.