You can't leave a Windows domain in the ProxySG appliance Management Console because the Leave button is grayed out.
To resolve the issue:
Identify the domain name (in this example, ‘mydomain’ is the domain name). In the Management Console, select Configuration > Authentication > Windows Domain.
Leave the domain through the Command Line Interface (CLI). Enter the following in the CLI:
ProxySG#config t ProxySG#(config)security windows-domain ProxySG#(config security windows-domains)leave mydomain
If an error appears and you cannot leave the domain, troubleshoot the issue. Proceed to step 3 below if you receive the following error: % Domain alias "mydomain" is referenced by another configuration - check MAPI Proxy or IWA Direct Realm.
Check the MAPI proxy and verify if ‘mydomain’ is displayed as Exchange domain name alias:
ProxySG#config t ProxySG#(config)mapi ProxySG#(config mapi)view
If Exchange domain name alias shows the domain name, clear the settings forthe Exchange domain alias (disassociate MAPI from Exchange domain):
ProxySG#config t ProxySG#(config)mapi ProxySG#(config mapi) no exchange-domain
Refresh the Management Console (or log out and log in again). The domain should show as not joined.
Imported Document ID: 000008406
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