When you encounter the LDAP:error code 49 error message and experience problems connecting to your LDAP authentication server, you can check which LDAP function is causing the problem.
Common Active Directory Authentication Errors
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525
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The user is not found.
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52e
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The user credentials are not valid.
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530
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The user is not allowed to log in at this time.
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531
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The user is not allowed to log in to this workstation.
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532
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The password has expired.
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533
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This user account has been disabled.
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701
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This user account has expired.
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773
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The user must reset their password.
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775
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The user account has been locked.
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