diff --git a/app/Services/LdapAd.php b/app/Services/LdapAd.php
index 1df143dc2..ab3e05795 100644
--- a/app/Services/LdapAd.php
+++ b/app/Services/LdapAd.php
@@ -23,10 +23,33 @@ use Illuminate\Support\Facades\Log;
  */
 class LdapAd extends LdapAdConfiguration
 {
-    /**
-     * @see https://wdmsb.wordpress.com/2014/12/03/descriptions-of-active-directory-useraccountcontrol-value/
-     */
-    const AD_USER_ACCOUNT_CONTROL_FLAGS = ['512', '544', '66048', '66080', '262656', '262688', '328192', '328224', '1049088'];
+    /* The following is _probably_ the correct logic, but we can't use it because
+       some users may have been dependent upon the previous behavior, and this
+       could cause additional access to be available to users they don't want
+       to allow to log in.
+    $useraccountcontrol = $results[$i]['useraccountcontrol'][0];
+    if(
+        // based on MS docs at: https://support.microsoft.com/en-us/help/305144/how-to-use-useraccountcontrol-to-manipulate-user-account-properties
+        ($useraccountcontrol & 0x200) && // is a NORMAL_ACCOUNT
+        !($useraccountcontrol & 0x02) && // *and* _not_ ACCOUNTDISABLE
+        !($useraccountcontrol & 0x10)    // *and* _not_ LOCKOUT
+    ) {
+        $user->activated = 1;
+    } else {
+        $user->activated = 0;
+    } */
+    const AD_USER_ACCOUNT_CONTROL_FLAGS = [
+      '512',    // 0x200    NORMAL_ACCOUNT
+      '544',    // 0x220    NORMAL_ACCOUNT, PASSWD_NOTREQD
+      '66048',  // 0x10200  NORMAL_ACCOUNT, DONT_EXPIRE_PASSWORD
+      '66080',  // 0x10220  NORMAL_ACCOUNT, PASSWD_NOTREQD, DONT_EXPIRE_PASSWORD
+      '262656', // 0x40200  NORMAL_ACCOUNT, SMARTCARD_REQUIRED
+      '262688', // 0x40220  NORMAL_ACCOUNT, PASSWD_NOTREQD, SMARTCARD_REQUIRED
+      '328192', // 0x50200  NORMAL_ACCOUNT, SMARTCARD_REQUIRED, DONT_EXPIRE_PASSWORD
+      '328224', // 0x50220  NORMAL_ACCOUNT, PASSWD_NOT_REQD, SMARTCARD_REQUIRED, DONT_EXPIRE_PASSWORD
+      '4260352',// 0x410200 NORMAL_ACCOUNT, DONT_EXPIRE_PASSWORD, DONT_REQ_PREAUTH
+      '1049088',// 0x100200 NORMAL_ACCOUNT, NOT_DELEGATED
+    ];
 
     /**
      * The LDAP results per page.