LDAP Authorization/SSO: 'user/login/sso' authenticates but does not log user in

I've done some further testing, and can see that my credentials are getting pulled into ldap_module.sso without a problem. So it definitely appears to be an issue with the LDAP mappings to Drupal roles. I verified this by testing my username under the UI's Authorizations section, which pulled my data but not mappings.

I'm using the same mappings (copied & pasted) that I used in the previous version of 7.x-1.0-beta12, and I'm not sure what's changed between them. My settings are already listed on the original post, so I won't be redundant. Hopefully I'll get a response to this issue soon, as it's really going to hold me back from launching the site until it's resolved.

Marking as duplicate of LDAP Authorization does not map ldap groups to drupal roles.

@eerorika: Thanks for the information and the patch. I just gave it a try and it didn't work for me.

Unfortunately when testing with IE9, Firefox and Chrome, I get redirected to the user login page with this notice: "You were not authenticated by the server. You may log in with your credentials below.". No Watchdog logs were created for this login attempt.

However, when I look at the logs I do see 3 notices from the server test with the same message:

Type ldap 
Date Wednesday, June 19, 2013 - 16:15 
User jayhawkfan75
Location http://mysite/admin/config/people/ldap/servers/test/myservername
Referrer http://mysite/admin/config/people/ldap/servers/test/myservername
Message LDAP ldap_search error. basedn: ou=users,dc=myservername,dc=com| filter: (&(objectClass=group)(|(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)(=)))| attributes: Array ( ) | errmsg: Bad search filter| ldap err no: -7| 
Severity notice 
Hostname xxx.xx.x.xxx
Operations

I'm not sure why I'm getting a "bad search error", since that test worked.

I also see these notices when visiting the "admin/config/people/ldap/help/status" page:

Notice: Undefined index: ldap_sso in ldap_help_get_server() (line 79 of E:\mysite\sites\all\modules\ldap\ldap_help\ldap_help.status.inc).
Notice: Trying to get property of non-object in ldap_help_get_server() (line 79 of E:\mysite\sites\all\modules\ldap\ldap_help\ldap_help.status.inc).
Notice: Undefined index: ldap_sso in ldap_help_get_server() (line 80 of E:\mysite\sites\all\modules\ldap\ldap_help\ldap_help.status.inc).
Notice: Trying to get property of non-object in ldap_help_get_server() (line 80 of E:\mysite\sites\all\modules\ldap\ldap_help\ldap_help.status.inc).
Notice: Undefined index: ldap_sso in ldap_help_get_server() (line 81 of E:\mysite\sites\all\modules\ldap\ldap_help\ldap_help.status.inc).
Notice: Trying to get property of non-object in ldap_help_get_server() (line 81 of E:\mysite\sites\all\modules\ldap\ldap_help\ldap_help.status.inc).

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UPDATE:
After some debugging, I got rid of the above notices by re-installing only the ldap_sso folder and re-running the patch from #4. I could see that the setting for ldap_sso were missing on the Help/Status page at admin/config/people/ldap/help/status, and it wasn't listed under the modules. Hope it helps.
*****

On the Server section's test, entering my username returned all of my information property. But when I run the Authorization section's test against my username, the LDAP roles are not mapped to Drupal roles as they should be. The "Results after any filtering and mappings applied" section is just blank.

This is all very confusing to me, and I really hope to get some clarification and/or resolution to this issue soon or I'll have to come up with an alternative to the LDAP module.

Update:
I just disabled Anonymous access on IIS 7.5 and it worked for me on all three browser version...yea!!!

I remembered that I had to do that to get a previous version of this module to work, and voila...it now works. I had tried this before your patch without success, so thanks for your help. Hopefully the patch will get committed.

Next step, getting the LDAP > Drupal role mappings to work under Authorization, which they still aren't. I'll keep up with the other issue report titled LDAP Authorization does not map ldap groups to drupal roles concerning that.

I'd also like to have it so that anonymous users can also access the site (i.e. network users without an Active Directory account), but I'll create another support request for that issue since it's unrelated. Thanks eerorika; your help is *much* appreciated!