Hi Everyone,
For users who are experiencing this issue, please try the following steps provided by moderator Eugene R, which I have quoted below.
Eugene R. replied on July 25, 2014
Please be informed that Google has made a change to their security defaults and disable the use of Basic Authentication by Google accounts. This will break Gmail connections to Outlook.com. To know more, you can read the article
below:
Outlook cannot connect to Gmail after July 15, 2014
We recommends enabling basic authentication for your Google account. In addition, we also suggest to use Google's Two-step verification featured combined with an App password for Outlook.com This will option will increase your
overall account security. Please check the articles below:
About 2-Step Verification
Sign in using App Passwords
While you're at it, using Two-step verification for your Microsoft Account is a good idea too, to do this, please follow the steps on the article below:
Two-step verification: FAQ
If the issue still persists, don't hesitate to inform us and we'll be happy to further assist you.
Thank you.
You can also try the suggested steps by tecgoblin on which it resolve the issue by enabling all extra security in Google.
tecgoblin replied on August 12, 2014
After following the directions of Eugene R, my problem seems to have been solved. Mind that I enabled all extra security in google as requested, but I did not find where to use the "app codes". When I disconnected and reconnected my MS Account to Google,
the reconnexion happened automatically (google was happy with my browser's session on the authorised device and did not ask for any password).
Now everything seems working.
If the issue still persists, please let us know and provide the options that you have enabled on your account.
Thank you.