Using client 4.91 SP4 with all post-SP4 patches applied, including the
recent LOGINW32.DLL patch (document 5007660) that speaks to this
particular error message (bug 271161).

This only occurs on the first AutoLogon. After I "ok" the error the
AutoLogon proceeds as expected. Enabling caching for LDAP contextless
login allows subsequent AutoLogon attempts to succeed without displaying
the error, but it doesn't help out with the first attempt.

LDAP contextless login is configured to use SSL and the LDAP Trust Root
Certificate was exported and saved locally. Contexts are specified
correctly and i'm using default search/connection timeout values of 10/5
seconds respectively.

Any thoughts?