This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Le thread ibilondoloziwe. Nceda ubuze umbuzo omtsha ukuba ufuna uncedo.

Ever since I upgraded to FF 16.0.2 Gmail will not allow me to click on any message. I get this error "Oops… the system encountered a problem (#405)-Retrying"

  • 2 iimpendulo
  • 3 inale ngxaki
  • 3 views
  • Impendulo yokugqibela ngu cor-el

jarut1978
jarut1978
more options

Google Chat still works on the page, but I cannot access any message and the window does not refresh to show new messages. I am on Windows XP SP3 and have not seen any issues until the upgrade to FF 16.0.2 last week. I also have not installed any new software nor have I made any changes to my internet security software. I can access Gmail through IE8 and on my phone so it is not a Gmail issue.

Google Chat still works on the page, but I cannot access any message and the window does not refresh to show new messages. I am on Windows XP SP3 and have not seen any issues until the upgrade to FF 16.0.2 last week. I also have not installed any new software nor have I made any changes to my internet security software. I can access Gmail through IE8 and on my phone so it is not a Gmail issue.

Isisombulu esikhethiweyo

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

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

Funda le mpendulo kwimeko leyo 👍 1

All Replies (2)

user633449
user633449
more options

Isisombululo esiKhethiweyo

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

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

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

If it happens again then try these steps:

Reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

  • Press and hold Shift and left-click the Reload button.
  • Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • Press "Command + Shift + R" (MAC)

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.