KB233977: "Can not find the LDAP user/group. Please contact the Administrator." error is encountered when using Windows authentication
![LDAP - Filter "User without assigned LDAP groups" does not work as expected · Issue #1180 · zammad/zammad · GitHub LDAP - Filter "User without assigned LDAP groups" does not work as expected · Issue #1180 · zammad/zammad · GitHub](https://user-images.githubusercontent.com/3321655/26987852-630c11ce-4d4d-11e7-8a33-58c35b76d9cd.jpg)
LDAP - Filter "User without assigned LDAP groups" does not work as expected · Issue #1180 · zammad/zammad · GitHub
![Symantec Access Management - Broadcom Community - Discussion Forums, Technical Docs, and Expert Blogs Symantec Access Management - Broadcom Community - Discussion Forums, Technical Docs, and Expert Blogs](https://iamtechtips.com/wp-content/uploads/2018/04/DetailedLDAPFilter.png)
Symantec Access Management - Broadcom Community - Discussion Forums, Technical Docs, and Expert Blogs
![Group Search Attribute Filter is not Optional in LDAP UI, though marked as Optional · Issue #1774 · vmware-tanzu/community-edition · GitHub Group Search Attribute Filter is not Optional in LDAP UI, though marked as Optional · Issue #1774 · vmware-tanzu/community-edition · GitHub](https://user-images.githubusercontent.com/18258500/133589618-f0f62642-18ab-45c8-8b22-7ad1e0b99aee.png)