Firefox launches but there is no window visible on taskbar
I have the same problem as here https://support.mozilla.org/en-US/questions/1131091, except that the firefox window doesn't show up at all on the taskbar. I tried to rename the xulstore.json and localstore.rdf after I kill the firefox process in the task manager. Then I restart firefox, and it works, although I had to reset my toolbars' showed/hidden preferences. However, when I close the firefox's main window and tried to run it again, this time it failed: no matter how I rename the xulstore.json and localstore.rdf, the problem persisted: no firefox window showed up on the taskbar. The resolution in the archived post only worked for once. It failed for the second and other times.
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Big time Video Card Driver issues. It looks like you have a Intel on-board Video Card and it is still active. It should be turned off in Bios after updating it's drivers. https://downloadcenter.intel.com/product/81496/Intel-HD-Graphics-4600 You will have to determine if do not know what cpu chip running. Can use Cpu-Z https://www.cpuid.com/ to find out.
Your other card needs updated drivers http://www.nvidia.com/download/driverResults.aspx/116704/en-us to fix all your issues below.
adapterDescription: Intel(R) HD Graphics 4600
adapterDescription2: NVIDIA Quadro K2100M
adapterDeviceID: 0x0416
adapterDeviceID2: 0x11fc
adapterDrivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32
adapterDrivers2: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
adapterRAM: Unknown
adapterRAM2: 2048
adapterSubsysID: 221e17aa
adapterSubsysID2: 221a17aa
adapterVendorID: 0x8086
adapterVendorID2: 0x10de
crashGuards: []
currentAudioBackend: wasapi
direct2DEnabled: True
directWriteEnabled: True
directWriteVersion: 6.3.9600.18592
driverDate: 2-8-2016
driverDate2: 11-5-2015
driverVersion: 10.18.14.4385
driverVersion2: 10.18.13.5445
failures: [u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,22650) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0', u'[GFX1-]: [D2D1.1] 4CreateBitmap failure Size(20,24000) Code: 0x80070057 format 0']
featureLog: {u'fallbacks': [], u'features': [{u'status': u'available', u'description': u'Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'HW_COMPOSITING'}, {u'status': u'available', u'description': u'Direct3D11 Compositing', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_COMPOSITING'}, {u'status': u'disabled', u'description': u'Direct3D9 Compositing', u'log': [{u'status': u'disabled', u'message': u'Disabled by default', u'type': u'default'}], u'name': u'D3D9_COMPOSITING'}, {u'status': u'available', u'description': u'Direct2D', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'DIRECT2D'}, {u'status': u'available', u'description': u'Direct3D11 hardware ANGLE', u'log': [{u'status': u'available', u'type': u'default'}], u'name': u'D3D11_HW_ANGLE'}]}
indices: [0, 16, 17, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
info: {u'AzureCanvasAccelerated': 0, u'AzureCanvasBackend': u'direct2d 1.1', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'direct2d 1.1'}
isGPU2Active: False
numAcceleratedWindows: 2
numTotalWindows: 2
supportsHardwareH264: Yes; D3D11 blacklisted with DLL nvwgf2um.dll (10.18.13.5445); Using D3D9 API
webgl2Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0)
webglRenderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4600 Direct3D11 vs_5_0 ps_5_0)
windowLayerManagerRemote: True
windowLayerManagerType: Direct3D 11
SO fix your drivers and see if Firefox still runs. If not Please uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Then run Windows Disk Cleanup. Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. (we hope) https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data Then reinstall https://www.mozilla.org/en-US/firefox/organizations/all/
Please let us know if this solved your issue or if need further assistance.
Thanks a lot for your reply. I'll try updating my video drivers some time later when I have time. Now after updating to 52.5 ESR the problem seems to be solved, although I'm not 100% sure.
By the way, do you think the video driver issue is a possible cause of my other question https://support.mozilla.org/questions/1181780 ? Thanks again!