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Since last FF update Windows Taskbar is no longer visible at bottom of my screen

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Windows Taskbar is no longer visible at bottom of my screen. If I tap F11 twice, it will show briefly at the bottom, then disappears again.

Windows Taskbar is no longer visible at bottom of my screen. If I tap F11 twice, it will show briefly at the bottom, then disappears again.

Additional System Details

Installed Plug-ins

  • Adobe PDF Plug-In For Firefox and Netscape 15.20.20039
  • Citrix Online App Detector Plugin
  • Coupons, Inc. Coupon Printer 5.0.2.2
  • Google Update
  • Intel web components updater - Installs and updates the Intel web components
  • Intel web components for Intel® Identity Protection Technology
  • NPWLPG
  • Shockwave Flash 24.0 r0
  • Adobe Shockwave for Director Netscape plug-in, version 12.2.5.195
  • 5.1.50901.0
  • VLC media player Web Plugin

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0

More Information

cor-el
  • Top 10 Contributor
  • Moderator
17482 solutions 158000 answers

Is the Firefox window maximized?

Try to un-maximize the Firefox window and see if you can resize the Firefox window.

You can also try to rename/remove the xulstore.json file in the Firefox profile folder.

You can use this button to go to the current Firefox profile folder:

Is the Firefox window maximized? Try to un-maximize the Firefox window and see if you can resize the Firefox window. You can also try to rename/remove the <b>xulstore.json</b> file in the Firefox profile folder. You can use this button to go to the current Firefox profile folder: *Help -> Troubleshooting Information -> Profile Directory:<br>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder *http://kb.mozillazine.org/Profile_folder_-_Firefox
Io_sono_Paolo 0 solutions 2 answers

PROBLEM STILL REMAIN I deleted xulstore.json file (in Firefox folder) but system recreated it. Do you know why? Thank you I'm on Firefox 54.0.1 (64 bit)

PROBLEM STILL REMAIN I deleted xulstore.json file (in Firefox folder) but system recreated it. Do you know why? Thank you I'm on Firefox 54.0.1 (64 bit)