Many site issues can be caused by corrupt cookies or cache.

• Clear the Cache and

• Remove Cookies

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

Type about:preferences<enter> in the address bar.

• Cookies; Select Privacy. Under History, select

Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.

• Cache; Select Advanced > Network. Across from

Cached Web Content, Press Clear Now.

If there is still a problem, Start Firefox in Safe Mode {web link} A small dialog should appear. Click Start In Safe Mode (not Refresh). While you are in safe mode;

Try disabling graphics hardware acceleration in Firefox. Since this feature was added to Firefox it has gradually improved but there are still a few glitches.

You will need to restart Firefox for this to take effect so save all work first (e.g., mail you are composing, online documents you're editing, etc.,) and then perform these steps:

In Firefox 54 and below:

1. Click the menu button and select Options (Windows) or Preferences (Mac, Linux).
2. Select the Advanced panel and the General tab.
3. Uncheck Use hardware acceleration when available.
4. Close Firefox completely and then restart Firefox to see if the problem persists.

In Firefox 55 and above:

1. Click the menu button and select Options (Windows) or Preferences (Mac, Linux).
2. Select the General panel.
3. Under Performance, uncheck Use recommended performance settings. Additional settings will be displayed.

   

4. Uncheck Use hardware acceleration when available.
5. Close Firefox completely and then restart Firefox to see if the problem persists.

Did this fix your problems? Please report back to us!

If the problem is resolved, you should check for updates for your graphics driver by following the steps mentioned in these Knowledge base articles:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

• Upgrade your graphics drivers to use hardware acceleration and WebGL

What happens if you try to download this file?

Can't you right-click a link and use "Save Link as" to save the file?

If the servers send the file as text/plain then Firefox will open the file in a Firefox tab.

With what content type does the server send this file if you open a link in a new tab? You can check that in "Tools -> Page Info -> General" and in the Network Monitor.

• https://developer.mozilla.org/en/Tools/Web_Console
• https://developer.mozilla.org/en/Tools/Network_Monitor

Hello corel. ebsco download of .acsm file is in their "download popup". right click does not work (it is not designed that way). No ability to force it to go to a new tab. Tried many times. You must click the download button.

What is observed

• no error message is observed
• I do not receive an .acsm file
• All looks normal, I can see its working (little circle goes over the tab). But no .acsm

Normally you click the download button, and it processes, and the .acsm file downloads automatically. This normal behaviour I observed BEFORE upgrade to Firefox 55. This normal behaviour I observed in Safari.

• cache has been cleared
• cookies has been cleared. I do not save cookies for this site or the other sites that use this .acsm file
• hardware acceleration is OFF. always has been
• error occurs in safe-mode
• right click on download button is not possible. download button is in a popup and right click/force open in link in new tab is not available.

I could do this regular and simple action many many many times in Firefox before upgrade to 55. I can do it in safari

Things like this do not encourage a user to upgrade if they wish to stay using Firefox.

I have reverted back to the old Firefox version and all is working again.

Can you post a link to a publicly accessible page (i.e. no authentication or signing on required)?

the page is authenticated e.g. it is borrowing an ebook from my library