**Problem:** 
Some AD users can't log in, they get the error:
`Authentification failed: password is incorrect or there is no user with such name`

Clickhouse version 22.3.2.1

**There is an error in Clickhouse logs:**
`<Error> Access(user directories): from: 10.11.12.13, user: AD_USERNAME: Authentification failed: Code: 532. DB::Exception: Size limit exceeded. (LDAP_ERROR)`

This error occurs for AD users who have many groups in the **memberOf** LDAP container.

**I checked the number of groups for 4 accounts:**

AD_USERNAME_1 - 107 groups - ERROR Authentification failed
AD_USERNAME_2 - 120 groups - ERROR Authentification failed
AD_USERNAME_3 - 54   groups - OK
AD_USERNAME_4 - 38   groups - OK

**I checked the search groups through the Ldapsearch program:**

Ldapsearch gave all 107 groups for the account without errors:
`ldapsearch -H "ldaps://hostname:636" -D 'CN=AD_USERNAME_1,OU=Users,DC=company,DC=corp.DC=net' -b 'DC=company,DC=corp.DC=net' '(&(objectClass=group)(member=CN=AD_USERNAME_1,OU=Groups,DC=company,DC=corp.DC=net))'`

**Probable cause of the error:** 
Clickhouse receives a list of groups which mapping from AD and cannot process a large string/array.
result.emplace(vals[i]->bv_val, vals[i]->bv_len);
                            }
                        }
                    }
                }
                break;
            }
            case LDAP_RES_SEARCH_REFERENCE:
            {
                char ** referrals = nullptr;
                diag(ldap_parse_reference(handle, msg, &referrals, nullptr, 0));
                if (referrals)
                {
                    SCOPE_EXIT({
                        ber_memvfree(reinterpret_cast<void **>(referrals));
                        referrals = nullptr;
                    });
                    for (size_t i = 0; referrals[i]; ++i)
                    {
                        LOG_WARNING(&Poco::Logger::get("LDAPClient"), "Received reference during LDAP search but not following it: {}", referrals[i]);
                    }
                }
                break;
            }
            case LDAP_RES_SEARCH_RESULT:
            {
                int rc = LDAP_SUCCESS;
                char * matched_msg = nullptr;
                char * error_msg = nullptr;
                diag(ldap_parse_result(handle, msg, &rc, &matched_msg, &error_msg, nullptr, nullptr, 0));