Cannot log in to Admin Console "loading"

[PS-Man]

Since upgrading from V5.0.11 to V5.0.16 I cannot login to my admin console. The login screen is presented and upon entering username / password, the browser responds with "loading". Have tried both IE & Firefox browsers and deleted all cache, with no resolve?

The client login to Zimbra webmail is fine, same with Outlook connectors; no problems here.

[Jesster]

I had this problem and discovered that the global config zimbraLogHostname was set to one of my Zimbra MTA servers.

Check yours to see if it's what it should be (mine should be set to my mailbox server)

[zimbra@zproxy01 ~]$ zmprov gacf zimbraLogHostname
zimbraLogHostname: zmbx01.example.org
[zimbra@zproxy01 ~]$

[PS-Man]

Jesster, my zimbraLogHostname is set to my mailbox server correctly.

Anyone else can help?

[PS-Man]

Ok so here's how it was solved.

From the mailbox.log it seemed the upgrade process had somehow deleted the wiki@ system email address.

Check if it exists:
su - zimbra
zmprov gaa |grep wiki@domain.com

If it does not exist, create it with following command:
su - zimbra
zmprov ca wiki@domain.com password description "Global Documents account"
zmprov in wiki@domain.com
zmprov impn wiki@domain.com /opt/zimbra/wiki/Template Template

Then clear the browser cache and login to admin console.