Try disabling it in your virus software's options. Also in some cases security software such as McAfee Security Center or Microsoft security essentials has real time scanning that will cause the save file to hang. Note: If the Download Manager appears to be stuck scanning for viruses, try closing and re-opening the Downloads window. In some cases, this causes a substantial delay or hang while the file is scanned. Virus scanning: Firefox launches your installed anti-virus program to scan files when the download completes. Note: You can view and selectively disable Windows shell extensions added by third-party (non-Microsoft) applications with the ShellExView utility, to determine if one of them is causing the issue. If you have these or similar programs installed, try installing a newer version or else uninstall the application if you don't need it. Every time Firefox calls the windows function to open a windows filpicker this shell driver is loaded as well and hangs Firefox. This application installs a shell extension for File I/O and this shell extension hangs Firefox. As reported in bug 587903, (quote) Tortoise is causing the problem. A program called WagerLogic and older versions of TortoiseCVS have been known to cause this problem. You can also try choosing a new download folder in your Firefox settings: " Tools -> Options -> General (Main in Firefox 3.5) / Downloads -> Save files to -> Browse".Ī Windows shell extension added by certain applications can cause Firefox to hang when choosing a folder location to save a file or when opening "Options" or "Downloads" from the Firefox (Tools) menu. Try resetting the preference in about:config. įirefox can hang downloading files if the folder where Firefox is attempting to save the download no longer exists or is not accessible. If this doesn't help or if it also causes a hang, exit Firefox completely and delete the file downloads.sqlite in the Firefox profile folder.In the Firefox menu, click on "Downloads" (or "Tools - > Downloads") and click "Clear List" to clear the Download History. As a workaround, close Firefox before placing the computer in standby/hibernation mode.Īs the download history grows, files may take longer to download and Firefox may appear to hang when downloading. Note that Flash is not the only cause of problems after waking the computer from hibernate or standby. This page will tell you what Flash version is installed. On Windows, updating Flash to the latest version should resolve the issue, which has been reported with Flash 8. You may experience excessive delay or Firefox may appear to hang when waking the computer from hibernation or standby. See the bug report for a suggested workaround (details here), apply the fix from Oracle (see bug comments 58-61) or downgrade to Firefox 3.6.xx (available here) however, Firefox 3.6 is no longer being maintained. If you are using a corporate login system such as IBM Tivoli Access Manager or Oracle Enterprise Single Sign On Manager, bug 680927 can cause Firefox 10 can hang at startup, with the process running in the background consuming CPU (rather than crash at startup, as it would in Firefox 7, 8, or 9). (If you see this message when no Firefox processes are running, even after restarting the computer, see this article.) See Hang at exit (below) if this is a recurring problem. If you are unable to restart Firefox, you will need to end all Firefox processes or restart the computer. Note that Firefox 3 has a delayed shutdown and will show you this dialog if you try to restart it too soon after exiting. To open a new window, you must first close the existing Firefox process, or restart your system., Firefox may have stopped responding the last time you closed it. If you see a "Close Firefox" dialog when starting Firefox, with the message Firefox is already running, but is not responding. For more information on Hyper-Threading, see Intel's article and this article at. Īlternatively, you can disable Hyper-Threading support for Firefox in Windows 2000 and later, as follows: Right-click the Firefox shortcut → Properties → Compatibility → Check "Run this program in compatibility mode" → Select "Windows 98/Windows ME" → OK. If you’re experiencing hangs, you may want to check your motherboard manufacturer’s website for updates to the BIOS. In some cases, motherboard chipsets supporting Hyper-Threading can cause Firefox to hang at startup. Hyper-Threading is a feature on certain older Intel Pentium 4-based processors. Hang loading first Firefox window Hyper-Threading 6.3 Hang loading websites when using an automatic proxy configuration file.6.2 Hang loading sites with Java, Flash, or PDF files.5 Hang after prolonged or extensive use.
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