hello ozlemmc, this is something that's controlled by the site itself, so you'll probably have to contact outlook's support about that issue: Problems with email and how to find help

I contacted them as requested. They tested and confirmed this is firefox issue.

Hi ozlemmc:

I have Outlook but it's unclear which version of Outlook you are talking about.

There's the end-user Outlook.com (personal) (https://col131.mail.live.com/default.aspx?id=64855&owa=1&owasuffix=owa%2f)

Then there's the Outlook Web App aimed at universities and some businesses. (Mine links to https://pod51041.outlook.com/owa/)

personal one

Hi, it works fine for me.

You can try these steps in case of issues with web pages:

You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.

• Hold down the Shift key 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 cookies only from websites that cause problems.

"Clear the Cache":

• The image "new fx menu" does not exist. > Options/Preferences> Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

• The image "new fx menu" does not exist. > Options/Preferences > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

I cleared all the history(inc cache andcookies) last night but still no change:-((

Can you try to start Firefox in Safe Mode to see if Firefox works properly with no error? You can start Firefox in Safe Mode below:

• Windows/Mac: Go to Help > Restart with add-ons disabled
• Linux: Run firefox -safe-mode in the Terminal/Konsole

If Firefox opens up fine with no problems, it's probably one of your extensions that's causing the issue. You can re-enable your add-ons one by one until you find the one that causes the issue upon being re-enabled.

-( this hasn't worked either

Can you try disabling Protected Mode for Flash using the workaround below:

• http://forums.adobe.com/thread/1018071#TemporaryWorkaround

it seemed to work now:-)) Thanks so much. So what was the issue suddenly came out of blue? Can I also ask about Flash Player crashes in Firefox that was on the link u sent? I have that problem as well but couldn't follow after option 3 on the link.

I've got bad news. Still cannot see if any email is received unless I go to the tab

I just tried testing this on the latest beta, and the background tab updated immediately.

We'll need some more info about your Firefox setup. Go to Help > Troubleshooting Information then click Copy all to Clipboard. Open a reply to this post, and go to Edit > Paste to paste the info from your Troubleshooting Information page.

{

 "application": {
   "name": "Firefox",
   "version": "28.0",
   "userAgent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0",
   "supportURL": "https://support.mozilla.org/1/firefox/28.0/WINNT/en-US/"
 },
 "crashes": {
   "submitted": [],
   "pending": 0
 },
 "modifiedPreferences": {
   "accessibility.typeaheadfind.flashBar": 0,
   "browser.cache.disk.capacity": 358400,
   "browser.cache.disk.smart_size.first_run": false,
   "browser.cache.disk.smart_size.use_old_max": false,
   "browser.cache.disk.smart_size_cached_value": 358400,
   "browser.places.smartBookmarksVersion": 6,
   "browser.sessionstore.upgradeBackup.latestBuildID": "20140314220517",
   "browser.startup.homepage_override.mstone": "28.0",
   "browser.startup.homepage": "google.co.uk",
   "browser.startup.homepage_override.buildID": "20140314220517",
   "browser.tabs.warnOnClose": false,
   "dom.mozApps.used": true,
   "extensions.lastAppVersion": "28.0",
   "gfx.direct3d.last_used_feature_level_idx": 0,
   "network.cookie.prefsMigrated": true,
   "places.database.lastMaintenance": 1399294383,
   "places.history.expiration.transient_current_max_pages": 104858,
   "plugin.importedState": true,
   "plugin.disable_full_page_plugin_for_types": "application/pdf",
   "privacy.sanitize.migrateFx3Prefs": true,
   "storage.vacuum.last.places.sqlite": 1398947367,
   "storage.vacuum.last.index": 1
 },
 "graphics": {
   "numTotalWindows": 1,
   "numAcceleratedWindows": 1,
   "windowLayerManagerType": "Direct3D 10",
   "windowLayerManagerRemote": false,
   "adapterDescription": "AMD Radeon(TM) HD 6480G",
   "adapterVendorID": "0x1002",
   "adapterDeviceID": "0x9648",
   "adapterRAM": "512",
   "adapterDrivers": "aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64",
   "driverVersion": "8.900.7.1000",
   "driverDate": "9-28-2011",
   "adapterDescription2": "",
   "adapterVendorID2": "",
   "adapterDeviceID2": "",
   "adapterRAM2": "",
   "adapterDrivers2": "",
   "driverVersion2": "",
   "driverDate2": "",
   "isGPU2Active": false,
   "direct2DEnabled": true,
   "directWriteEnabled": true,
   "directWriteVersion": "6.2.9200.16571",
   "webglRenderer": "Google Inc. -- ANGLE (AMD Radeon(TM) HD 6480G Direct3D9Ex vs_3_0 ps_3_0)",
   "info": {
     "AzureCanvasBackend": "direct2d",
     "AzureSkiaAccelerated": 0,
     "AzureFallbackCanvasBackend": "cairo",
     "AzureContentBackend": "direct2d"
   }
 },
 "javaScript": {
   "incrementalGCEnabled": true
 },
 "accessibility": {
   "isActive": false,
   "forceDisabled": 0
 },
 "libraryVersions": {
   "NSPR": {
     "minVersion": "4.10.3",
     "version": "4.10.3"
   },
   "NSS": {
     "minVersion": "3.15.5 Basic ECC",
     "version": "3.15.5 Basic ECC"
   },
   "NSSUTIL": {
     "minVersion": "3.15.5",
     "version": "3.15.5"
   },
   "NSSSSL": {
     "minVersion": "3.15.5 Basic ECC",
     "version": "3.15.5 Basic ECC"
   },
   "NSSSMIME": {
     "minVersion": "3.15.5 Basic ECC",
     "version": "3.15.5 Basic ECC"
   }
 },
 "userJS": {
   "exists": false
 },
 "extensions": [
   {
     "name": "HP Smart Web Printing",
     "version": "4.51",
     "isActive": false,
     "id": "smartwebprinting@hp.com"
   },
   {
     "name": "McAfee SiteAdvisor",
     "version": "3.6.6",
     "isActive": false,
     "id": "{4ED1F68A-5463-4931-9384-8FFF5ED91D92}"
   }
 ]

}

Chris, Is above what is required? Thanks

I don't see anything there that might be the cause. I'm always suspicious of McAfee plugins. You could try disabling that. For instructions, visit https://support.mozilla.org/en-US/kb/troubleshoot-issues-with-plugins-fix-problems

How did Outlook show this notification previously?

Did the title of the page change as that would be a requirement to make the icon flash?

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.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

This hasn't worked either

I meant disabling McAfee plugins

Dear cor-el, I started Firefox in Safe Mode and the extensions were disabled: HP Smart Web printing is apparently incompatible with Firefox 29.0.1. McAfee site advisor was also disabled.

All ad-ons were also disabled by safe mode (default 29.0.1disabled).

How did Outlook show this notification previously? Normally I have many tabs open and when I am working on one of them if email is received Outlook (personal one) tab will have a number of emails received on the tab next to the tab name. But it does not flash. Title does not change.

Try resetting Firefox: https://support.mozilla.org/en-US/kb/reset-preferences-fix-problems