Exchange 2010 Online Archive Not Showing Up in Outlook 2010

Go to Tools->Email accounts. Go to More Settings for her account, then click the security tab. Make sure the "Encrypt data between Microsoft Outlook and Microsoft Exchange" is checked.

Statement: I'm still able to log into my account using Outlook Web Access (OWA), so I know that my account is working just fine.

Retort: Of course it is, because the message you're getting doesn't say anything about your account being unavailable or disabled/locked out. The message very clearly states that the version of Outlook that you're using has been blocked.

Q: Do you have any ideas on what I should look into to resolve this problem?

A: Yes. Speak to your Exchange administrator and tell him/her the message you're getting regarding your Outlook client.

Q: Is there any information I can obtain on the client side that will help the Exchange folks investigate the issue further? Is there any verbose logging I can enable, or diagnostic logging in Outlook?

A: How could it not already be blatantly, painfully obvious what the problem is? What could additional logging/information tell you that you don't already know? Stop over thinking and over troubleshooting this. Every problem doesn't have to have a complex, mysterious cause. KIS applies to troubleshooting as much as it does to anything else. If your Exchange admins need any additional information beyond what the message states in order to "investigate the issue further" then they're probably not the right folks for that job.

I appreciate the fact that you want to give your admins as much information as possible, and I'm not picking on you, but too many times I see people going off on wild goose hunts while trying to resolve a problem when basic, logical, deductive reasoning is all that's needed to find a resolution. In your case, the message is very clear as to what the problem is. Give that info to your admins and let them address it.