Setting up Microsoft Lync from Office 365

After installing Lync on my 64-bit PC using 64-bit intall it would not connect.

Cannot sign in because the server is temporarily unavailable. If the problem continues contact your support team

Solved with the steps on this site:

http://community.office365.com/en-us/f/164/p/21113/99750.aspx#99750

specifically:

Configure the Lync settings
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1. In the upper-right area of Lync 2010, click the Gear icon to open the Options page.
2. In the Lync – Options dialog box, click Personal.
3. Next to the sign-in address, click Advanced.
4. Make sure that Manual Configuration is selected and that the configuration values are exactly as follows:

Internal server name or IP address: sipdir.online.lync.com:443
External server name or IP address: sipdir.online.lync.com:443

I did not need to change the firewall. So any changes I had tried, I reversed and removed.