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

I cannot send my emails nor save to draft on Outlook. I always could before but lately I cannot. I've gone the Outlook support route and they can't do any more

more options

The last couple of months I have not been able to use my Outlook and send emails or save drafts. I have gone to outlook support but since it still works with Chrome and IE they say its firefox's issue and have no other help for me. I've cleared cache and history. extensions etc.. So I am coming to you now. I do have a VPN but outlook still won't work with it not on. So I am at a loss as to what to do. I don't like chrome nor IE and I've always had firefox and I want to continue that. I was still able to send emails when I first got the VPN so Im not sure what it is except very, very annoying. The same is for my laptop and that does not have the VPN.

The last couple of months I have not been able to use my Outlook and send emails or save drafts. I have gone to outlook support but since it still works with Chrome and IE they say its firefox's issue and have no other help for me. I've cleared cache and history. extensions etc.. So I am coming to you now. I do have a VPN but outlook still won't work with it not on. So I am at a loss as to what to do. I don't like chrome nor IE and I've always had firefox and I want to continue that. I was still able to send emails when I first got the VPN so Im not sure what it is except very, very annoying. The same is for my laptop and that does not have the VPN.
Attached screenshots

Chosen solution

You get the same error messages in a new profile?

If you use Avast, AVG, Bitdefender, ESET or Kaspersky, could you try removing them as "man in the middle" of your browsing between Firefox and websites? This article lists the general steps: How to troubleshoot security error codes on secure websites.

Read this answer in context 👍 1

All Replies (20)

more options

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

more options

I've done this before as well and it would work for one or two emails then back to the way it was.

more options

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.

If there is still a problem, Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Did this help?

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.

How to disable Hardware Acceleration {web link}

more options

Do I have to use FireFox in safe mode for ever?

more options

ardenfan said

Do I have to use FireFox in safe mode for ever?

Firefox's Safe Mode is a diagnostic tool. By seeing whether there is any difference between a site's functionality in regular and in safe mode, we can start to narrow down potential causes of problems.

Did you notice any difference?

Firefox's Safe Mode:

  • disables all Extensions (most common issue)
  • disables Hardware Acceleration (for graphics and video, probably not relevant here)
  • disables userChrome.css/userContent.css customization files (probably not relevant here)
  • disables the JavaScript compilers
more options

I could send an email after doing all above while in safe mode. Once I restarted I couldn't send an email.

more options

So a possible reason for that is interference by one of your extensions. Could you review and consider whether any might block any content or connections:

You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

  • Ctrl+Shift+a (Mac: Command+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions.

Then cast a critical eye over the list on the right side. Any extensions Firefox installs for built-in features are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything that looks as though it could affect connections or block content? If in doubt, disable (or remove).

Any improvement?

more options

There were no extensions and I've added the image of the add ons. I assume I can get rid of these.

more options

I chose never activate on all three and I still couldn't send an email.

more options

No Extensions?

The Plugins are not disabled in Firefox's Safe Mode, so those are not "suspects" for causing this problem.

Could you check your connection setting here:

  • Windows: "3-bar" menu button (or Tools menu) > Options
  • Mac: "3-bar" menu button (or Firefox menu) > Preferences
  • Linux: "3-bar" menu button (or Edit menu) > Preferences
  • Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the search box at the top of the page, type proxy and Firefox should filter to the "Settings" button, which you can click.

The default of "Use system proxy settings" piggybacks on your Windows/IE "LAN" setting. "Auto-detect" can lead to a flaky connection. You may want to try "No proxy".

Any difference?

more options

I tried no proxy and still couldn't send an email. I didn't do it in safe mode though.

more options

no extensions.. is that a bad thing? I uploaded the image

more options

It didn't work in safe mode either

more options

ardenfan said

It didn't work in safe mode either

Wait, what? I thought it did when you said --

ardenfan said

I could send an email after doing all above while in safe mode. Once I restarted I couldn't send an email.

So did anything on this page help so far?

more options

After I chose the no proxy and opened it in safe mode my email would not go.

more options

Late to this but are we talking web outlook or MS outlook? If Web Outlook I think you should use IE if your O/S is Windows. I seen where functions of outlook will not work with other Browsers but in IE they will work correctly.

more options

Thanks and It is web but I've ALWAYS used firefox and would like to continue to. It's odd that all of a sudden both my computer and laptop no longer will work to send emails. Everything else is fine.

more options

Could you try:

Private Window Test

Most likely, you use "regular" browsing, where Firefox accumulates history. To check whether accumulated data could be causing the issue, try using Outlook in a Private Window. You can launch that using either:

Any difference in your ability to send a message?


If the Private Window Test didn't help:

New Profile Test

This takes about 3 minutes, plus the time to test Outlook.

Inside Firefox, type or paste about:profiles in the address bar and press Enter/Return to load it.

Click the Create a New Profile button, then click Next. Assign a name like Nov2018, ignore the option to relocate the profile folder, and click the Finish button.

After creating the profile, scroll down to it and click the Set as default profile button below that profile, then scroll back up and click the Restart normally button. (There are some other buttons, but please ignore them.)

Firefox should exit and then start up using the new profile, which will just look brand new. Please ignore any tabs enticing you to connect to a Sync account or to activate extensions found on your system so we can get a clean test.

Can you send emails in the new profile?

If so, try exiting out of Firefox and starting it up again to make sure it still occurs on the second run. If it does, there may be an issue with settings in your regular profile.

When you are done with the experiment, open the about:profiles page again, click the Set as default profile button for your normal profile, then click the Restart normally button to get back to it.

more options

I've done both and I still can't send an email.

more options

Chosen Solution

You get the same error messages in a new profile?

If you use Avast, AVG, Bitdefender, ESET or Kaspersky, could you try removing them as "man in the middle" of your browsing between Firefox and websites? This article lists the general steps: How to troubleshoot security error codes on secure websites.

  1. 1
  2. 2