80072745 or 8004840a

Error Message:

Sorry we were unable to sign you into the Messenger service at this time. Please try again later. 80072ee7 or 8004840a

Reasons:

A firewall program is blocking messenger
Internet Explorer is not able to connect to secured websites

Resolutions:

Firewall settings

1. Temporarily disable your firewall program.
2. Verify if Windows Live Messenger is blocked by your firewall.
3. Contact your manufacturer if you need further assistance.

Check if there is a problem with your Internet Explorer:

1. Check if you can visit secured sites like https://microsoft.com or https://hotmail.com

2. If you encounter problems with those sites, try the steps below:

Vista or Windows 7 Users:

a. Right click Command prompt, and then Run as Administrator.

b. Type your password if prompted.

c. Input the following commands:

ipconfig /release and then press Enter

Ipconfig /renew and then press Enter

ipconfig /flushdns and then press Enter


XP Users:

a. Click Start, and then Run.

b. Type CMD and then click OK.

C. Input the following commands:

ipconfig /release and then press Enter

Ipconfig /renew and then press Enter
ipconfig /flushdns and then press Enter

If you encounter any errors while performing the steps, contact your ISP to check your Internet connection.