Dell EMC Unity: After upgrade to 5.1, some LDAP users may have trouble logging in to Unisphere (User Correctable)
Summary: After upgrading to 5.1, some users are unable to log in to Unisphere when their accounts are managed by LDAP.
This article applies to
This article does not apply to
This article is not tied to any specific product.
Not all product versions are identified in this article.
Symptoms
Login fails with an error message:
The logged in user is not authorized to access Unisphere.
The logged in user is not authorized to access Unisphere.
Cause
In order to be more compliant with established RFC2307 schema, LDAP authentication has now been made case sensitive as of Unity OE 5.1. This may cause certain customer’s LDAP user authentications into Unisphere to fail after upgrading if the case of the LDAP user stored in LDAPCache is not a match to how it appears in Active Directory.
Prior to 5.1, Unisphere's LDAPCache was not case sensitive, so a user with the incorrect case could still log in. Now that LDAP authentication is case sensitive, the incorrect entry in LDAPCache is preventing valid logins. Once an incorrect entry is added to LDAPCache, using the same name but with a different case will result in Unity querying LDAP with the cached data rather than what was entered.
Prior to 5.1, Unisphere's LDAPCache was not case sensitive, so a user with the incorrect case could still log in. Now that LDAP authentication is case sensitive, the incorrect entry in LDAPCache is preventing valid logins. Once an incorrect entry is added to LDAPCache, using the same name but with a different case will result in Unity querying LDAP with the cached data rather than what was entered.
Resolution
Fix:
A permanent fix is in progress. Please watch this Knowledgebase article for more details. The fix will check the name before it is stored in LDAPCache. If it does not match, it will result in a failure.
Workaround:
Close the browser and delete cookies in order to clear out the LDAPCache entries. Log back in to Unisphere using the username with a case that is an exact match for what is in LDAP.
A permanent fix is in progress. Please watch this Knowledgebase article for more details. The fix will check the name before it is stored in LDAPCache. If it does not match, it will result in a failure.
Workaround:
Close the browser and delete cookies in order to clear out the LDAPCache entries. Log back in to Unisphere using the username with a case that is an exact match for what is in LDAP.
Affected Products
Dell EMC UnityArticle Properties
Article Number: 000190984
Article Type: Solution
Last Modified: 11 May 2026
Version: 8
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.