How to Fix Time Related Errors on Secure Websites?

Click Advanced… on the error page to view the error code. One of the following error codes will indicate that the secure connection couldn’t be established due to a time-related error:


The text on the error page will warn you when Firefox detects that your system date and time is probably wrong and will also show the date and time currently set in your system. If the clock settings are incorrect you should set it to the right time as explained below. Even if the displayed time settings seem to be correct, you should make sure that the time zone settings of your system match your current location.

Set your system clock to the correct time

Time-related errors on secure websites caused by a skewed system clock can be resolved by setting your correct date, time and time zone. Change your date and time settings from the clock on the Windows taskbar or follow these instructions:

  • Click the Windows Start button or press the Windows key .
  • In the Start Menu, click Control Panel.
  • In the Control Panel window, click on Clock, Language, and Region and then Date and Time.
  • The panel that opens shows the current date and time settings. To change your settings click the Change date and time or Change time zone button.
  • To confirm your changes click OK.

Note: If the clock on your device constantly resets after you power it off, this might indicate that the battery cell that runs the real-time clock is getting low or is empty. Please consult your manufacturer’s manual on how to replace the CMOS battery.

Firefox 59 can’t open Adobe Acrobat Reader Properly

Firefox 59 Adobe Acrobat Reader Properly:

Go to the options in Firefox and associate PDF files with Adobe Acrobat Reader DC, instead of having them previewed within Firefox.

Firefox 59 is opening Adobe Acrobat in a broken state, resulting in a process for the program being create but no window or anything. Subsequent attempts to open Adobe Acrobat (even not via Firefox) while this bugged process is present results in more bugged processes being created but still no window.

Trying to Task Manager to close all the processes and then run Adobe Acrobat Reader from the Start Menu shortcut, EXE file or some such and not via Firefox, it will open without issue.

Mozilla Firefox 64-bit is a fast, full-featured Free Web Browser. Firefox includes pop-up blocking, tab-browsing, integrated Google, Yahoo and Bing search, simplified privacy controls, a streamlined browser window that shows you more of the page than.

Main Features of Firefox 59

Main important features for Firefox 59.0.1 (64-bit) include:

  1. Firefox 59.0.1 (64-bit) free and safe to download.
  2. Compatible with Windows 10 and other previous windows versions.
  3. Firefox 59.0.1 (64-bit) latest version.
  4. Editors and Users choice.
  5. Firefox 59.0.1 (64-bit) is easy to use.
  6. 32 bit version works on [64 bit (x64) and 32 bit (x86)] OS. 64 bit works only on 64 bit operating system.

How to install Adobe Acrobat Reader in Windows 10? | Albama

It includes an Adobe Acrobat browser plugin for displaying PDF documents within Firefox and other Web browsers.

Even though Firefox no longer supports the Adobe Reader browser plugin, you can still use the Adobe Reader program as your PDF viewer in Firefox. This article provides resources for setting up the Adobe Reader program on your computer.

Installing and updating Adobe Reader

To install Adobe Reader, please visit the website. To make sure your installation of Adobe Reader includes the latest available security and stability updates, open Adobe Reader, click on the Help menu and then click check for Updates.

Viewing PDF files in Firefox

By default, Firefox will use its built-in PDF Viewer. To use the Adobe Reader program instead:

  1. Click the menu button and choose Options.
  2. Select the General panel and go to the Applications
  3. Select the Portable Document Format (PDF) entry and change the action to use the Adobe Reader

How To Customize Firefox 57+ UI with user Chrome.css?

Customize Firefox 57+ UI with user Chrome.css | Arkansas

Customize Firefox 57+ UI with user Chrome.css with the help of Firefox 57 and Web Extensions, the ability to customize the UI via extensions and complete themes has ceased. However, it is still possible to customize the UI of Firefox 57 + by adding code snippets to the user Chrome.css file.

In addition, changes to the appearance of websites can be made using the user Content.css file.

#1. Open the Profile folder – if your profile already contains a chrome folder with userChrome.css and userContent.css files within it, then skip to Section #3 below.

#2. Create the required chrome folder, userChrome.css and userContent.css files

By following these links and using either the manual or automatic creation methods detailed there.

With manual creation, it should be noted that the naming of folders and files must be exactly as written here, and in the links, or else the computer program will ignore them.

#3. Editing of the userChrome.css and userContent.css files by adding code snippets –

Download and install a suitable text editor – Programmers Notepad is suggested for Windows users (gedit for Linux users and Eclipse Classic for Mac users)

A good text editor will show the important parts in various colours (syntax highlighting) which makes errors in your code much easier to notice, as well as line numbers and, most importantly, have almost unlimited undo and redo features.

This means that if the text editor is left open after editing and if the code changes are not as expected in result, then the code can be instantly reverted to exactly how it was before, just by using the Undo feature and saving the reverted change.

#4. Adding a sample code snippet to your userChrome.css file –

open the userChrome.css file with your text editor of choice and paste the following sample code snippet – just as it is written, below this line –

@namespace url(“”);

(This is called the namespace line and should not be altered or it will not function correctly. The namespace line is only required once in the userChrome.css file)


/*Sample Code Snippet that will turn UI text to red…*/
* { color: red !important; }

Use the text editor to Save this code snippet to your userChrome.css file and then restart. Firefox to see the result. Contrary to myth. Firefox does not need to be closed as you make these changes, but you must always restart to actually implement the changes.

To disable, but retain, a particular code snippet then just move the second */ above onto the end of the final line, like this :



/*Sample Code Snippet that will turn UI text to red…
* { color: red !important; }*/



/*Sample Code Snippet that will turn UI text to red…*/
* { color: red !important; }

Many code snippets are already posted in these forums or just ask in the Support forums.

To get a general idea of how .css code works, then browse the files here

How to Fix Firefox Error sec_error_unknown_issuer?

How to Fix Firefox Error sec_error_unknown_issuer?:

Mozilla Fix Firefox error Premium online tech Support Company focuses on Firefox Error sec_error_unknown_issuer to avoid trouble due to our Mozilla Firefox. Sometimes users are using Mozilla Firefox to browse a website; you go to the website using an SSL certificate and receive an error that your connection is not secure. If you click to learn more, you will see the following message below.

  1. Repair registry entries associated with error sec_error_unknown_issuer

  • Click on Start button
  • Type “command” in the search box … do not hit it yet!
  • With the CTRL-Shift on your keyboard, press ENTER
  • You will be prompted with the permission dialog box.
  • Click Yes
  • A black box will open with the blinking cursor.
  • Type “Regedit” and press enter
  • In Registry Editor, select the error sec_error_unknown_issuer-related key (such as Firefox) that you want to back up
  • From the File menu, select Export
  • Follow Save to List, select the folder where you want to save the Firefox backup key.
  • In the file name box, type a name for your backup file, such as “Firefox backup”.
  • Export the range, make sure that “selected branch” is selected.
  • Click Save
  • The file is then saved with a .reg file extension.
  • You now have a backup of the registry entry related to Firefox
  1. Operate a complete malware scan of your PC:

  2. Clear your system junk (temporary files and folders) with Disk Cleanup (


Fix Firefox error sec_error_unknown_issuer (solution)

How to run Disk Cleanup (Windows XP, Vista, 7, 8, and 10):

  • Click on Start button
  • Type “command” in the search box … do not hit it yet!
  • With the CTRL-Shift on your keyboard, press ENTER
  • You will be prompted with the permission dialog box.
  • Click Yes
  • A black box will open with the blinking cursor.
  • Type “cleanmgr” and press Enter
  • Disk Cleanup You can start calculating how much captured disk space.
  • Disk Cleanup dialog box will appear with a series of checkboxes you can select. In most cases, the “temporary files” category will occupy the most disk space.
  • Check the boxes of categories that you want to clear and click OK.
  1. Update your PC device driver:

  2. Use Windows System Restore for “Undo” System Recently Recently

To use System Restore (Windows XP, Vista, 7, 8, and 10):

  • Click on Start button
  • In the search box, type “System Restore” and press ENTER.
  • In the results, click System Restore.
  • Enter an administrator password (if prompted)
  • Follow the wizard steps to select the restore point
  • Restore your computer
  1. Uninstall and restore the Firefox program, connected to error sec_error_unknown_issuer

Uninstall and restore instructions for Windows 8, 10:

  • To add the start menu image, place the cursor at the bottom of the screen
  • Right-click to fetch the initial context menu
  • Click Programs and Features
  • Find out that the certificate is not trusted because the issuer certificate is an Anonymous-associated program under the Name column.
  • Click on the Firefox-related entry
  • Click Uninstall / Change on the top menu ribbon.
  • Follow the on-screen instructions to uninstall your error sec_error_unknown_issuer-related program
  •  Uninstall your error sec_error_unknown_issuer-related program (such as Firefox), restore the program according to the Mozilla Foundation instructions.
  1. Run Windows System File Checker (“SFC / scannow”)

System file tester is an easy tool that is included with Windows that allows you to scan and restore windows system files for corruption (including error-related sec_error_unknown_issuer)

  • To run the system file checker (Windows XP, Vista, 7, 8, and 10):
  • Click on Start button
  • Type “command” in the search box … do not hit it yet!
  • With the CTRL-Shift on your keyboard, press ENTER
  • You will be prompted with the permission dialog box.
  • Click Yes
  • A black box will open with the blinking cursor.
  • Type “Sfc / scannow” and press enter
  • System file tester error will begin scanning for sec_error_unknown_issuer and other system file problems (Endurance – System scan may take for a while).
  • Follow the on-screen commands
  1. Install All Available Windows Updates:

Microsoft is constantly updating and improving Windows system files that may be related to error sec_error_unknown_issuer

To check for Windows updates (Windows XP, Vista, 7, 8 and 10):

  • Click on Start button
  • Type “update” in the search box and press enter.
  • The Windows Update dialog box will appear.
  • If updates are available, click the update button.
  1. Perform a Clean Installation of Windows:

Reasons of Error sec_error_unknown_issuer:

  • Corrupt download or incomplete installation of Firefox.
  • Corruption in Windows registry from a recent Firefox-related software change
  • Virus or malware infection that has corrupted Windows system files
  •  Program have maliciously or mistakenly deleted Firefox-related files.