Situation: the client receives a Gmail a security warning and followed the instruction to change the security settings for Gmail. After that he can’t access Gmail in his Outlook and it keeps saying “incorrect password”.
Troubleshooting: 1. Make sure you Turn on IMAP in Google account. Please check this post: Configure other email apps to check Gmail
2. Make sure you use correct port and enable SSL. Also check this post: Configure other email apps to check Gmail
3. You may want to allow less secure apps. Please check this post: How to Allow less secure apps in Gmail
