Gmail error 800CCCD1 is basically a synchronization error between Windows Live and Gmail. If you are not able to use your Gmail account with Windows Live Mail, this could be possibly due to this error.
While trying to access your Gmail account through Windows Mail, you might receive an error message “The server has rejected your login. Please verify that your username and password are correct”, with the following details:
- Login already in progress: vk5if2283683igb.0
- Account: imap.gmail.com
- Server: imap.gmail.com
- Protocol: IMAP
- Port: 993
- Secure (SSL):1
- Code: 800cccd1
The main cause behind this error is Synchronization which might be due to the incorrect IMAP/POP3 settings. If you are sure that the IMAP settings of your Gmail account are correct, then refresh the connection by reconfiguring your account.
Step 1: Login to your Gmail account.
Step 2: Click on Settings gear and select “Settings”.
Step 3: Now select the “Accounts and Import” tab and under “Change account settings”, click on “Other Google Account settings”.
Step 4: Under “Sign-in & security option”, click on “Connected apps & sites”.
Step 5: Scroll down to the bottom and enable the “Allow less secure apps” by turning it ON.