WordPress Admin Bar Doesn't Show After Upgrade to 4.1

I upgraded to WordPress version 4.1 on two of my multisites and they both no longer show the Admin bar so it makes it difficult to edit pages. I do not get the "Edit" link on individual pages either.

I haven't found any issues on the web related to the 4.1 update and the Admin bar.

Other than disabling and re-enabling plugins, etc. What are some other things I can check?

Thanks in advance.