Solved Some sites won't open with "http" but with "https"

aakshat

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Power User
Local time
4:11 AM
Messages
129
Location
India
From some days I am experiencing this strange problem in Firefox.
i am unable to open some sites with the "http://" address in Firefox
it don't shows any error message or anything just a blank page.
but if i edit there url to "https://" sites open normally.

this is really annoying. please someone suggest a solution.
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Dell Insperon N5010
OS
Windows 7 Ultimate x64
CPU
i3 M380 2.53GHz
Motherboard
TOSHIBA MK5076GSX
Memory
4 Gb
Graphics Card(s)
intel HD
Sound Card
IDT
Screen Resolution
1366x768
Keyboard
Standerd PS2
Antivirus
ESET Smart Security 7
Browser
Google Chrome
Do you have the https everywhere add-on installed in Firefox? If so, disable and/or remove it and restart the browser to see if it fixes the problem.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Airbot 2.0
OS
Windows 7 Ultimate x64 SP1
CPU
Core i7 920 (D0) @ 4Ghz, *26c idle *65c full load on air
Motherboard
Asus P6X58D Premium - Sata 6Gb/s - USB 3.0
Memory
12GB DDR3 Corsair Dominator -CMD12GX3M6A1600C8 at 1600MHz
Graphics Card(s)
Zotac Geforce GTX 770
Sound Card
ASUS Xonar D2X
Monitor(s) Displays
1 LG 24" Flatron W2453V-PF 1 Samsung 24" P2450H both 2ms RT
Screen Resolution
1920x1080@60hz
Hard Drives
1 Samsung 250GB 840 Evo SSD
1 OCZ Vertex2 180GB SSD
1 TB Samsung Spinpoint F1 7200RPM 32MB cache
2 500GB WD Caviar Blacks 7200RPM 32MB cache (WD5001AALS)

Pioneer DVD Burner DVR-S18M
PSU
Corsair HX1000W
Case
Cooler Master HAF 932
Cooling
Case Fans *3 230mm, *1 140mm/CPU - *Tuniq Tower 120 Extreme
Keyboard
Logitech Wireless MK700
Mouse
Logitech Wireless MK700
Internet Speed
DL 15 Mbps UL 0.98 Mbps
Antivirus
None
Browser
Firefox Nightly
Other Info
Processor-7.7 *RAM- 7.9 *Graphics-7.9 *Gaming Graphics- 7.9 *SSD- 7.8 W.E.I final score= 7.7
*Phone- LG Nexus 5
No. no such add-on installed.
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Dell Insperon N5010
OS
Windows 7 Ultimate x64
CPU
i3 M380 2.53GHz
Motherboard
TOSHIBA MK5076GSX
Memory
4 Gb
Graphics Card(s)
intel HD
Sound Card
IDT
Screen Resolution
1366x768
Keyboard
Standerd PS2
Antivirus
ESET Smart Security 7
Browser
Google Chrome

My Computer

Computer type
PC/Desktop
OS
Windows 10 Home x64
CPU
INTEL Core i5-750 Quad-Core 3.37GHz
Motherboard
ASUS P7P55D
Memory
HyperX Fury Black Series 8GB (2 x 4GB) 1866Mhz
Graphics Card(s)
EVGA GeForce GTX 750 Superclocked 1GB 128-Bit GDDR5
Monitor(s) Displays
LG 32MA68HY 32" IPS
Screen Resolution
1920 x 1080
Hard Drives
Samsung 840 Evo 120GB, SEAGATE 500GB Barracuda® 7200.12, SATA 3 Gb/s, 7200 RPM, 16MB cache
PSU
ANTEC TruePower New TP-550, 80 PLUS, 550W
Case
ANTEC Three Hundred Illusion
Cooling
COOLER MASTER Hyper 212 Plus, 4 x 120mm 1 x 140mm Noctua's
Internet Speed
85 + Mbps
Antivirus
Avast
Browser
Vivaldi
Thanx for replying.

It is the same behavior for those sites. other sites works normally.
and I've also tried safe mode but it's still not working. :(
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
Dell Insperon N5010
OS
Windows 7 Ultimate x64
CPU
i3 M380 2.53GHz
Motherboard
TOSHIBA MK5076GSX
Memory
4 Gb
Graphics Card(s)
intel HD
Sound Card
IDT
Screen Resolution
1366x768
Keyboard
Standerd PS2
Antivirus
ESET Smart Security 7
Browser
Google Chrome

My Computer

Computer type
PC/Desktop
OS
Windows 10 Home x64
CPU
INTEL Core i5-750 Quad-Core 3.37GHz
Motherboard
ASUS P7P55D
Memory
HyperX Fury Black Series 8GB (2 x 4GB) 1866Mhz
Graphics Card(s)
EVGA GeForce GTX 750 Superclocked 1GB 128-Bit GDDR5
Monitor(s) Displays
LG 32MA68HY 32" IPS
Screen Resolution
1920 x 1080
Hard Drives
Samsung 840 Evo 120GB, SEAGATE 500GB Barracuda® 7200.12, SATA 3 Gb/s, 7200 RPM, 16MB cache
PSU
ANTEC TruePower New TP-550, 80 PLUS, 550W
Case
ANTEC Three Hundred Illusion
Cooling
COOLER MASTER Hyper 212 Plus, 4 x 120mm 1 x 140mm Noctua's
Internet Speed
85 + Mbps
Antivirus
Avast
Browser
Vivaldi
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