diff --git a/config/default.json b/config/default.json
index 704b0d8b72..8a8573aa3e 100644
--- a/config/default.json
+++ b/config/default.json
@@ -74,7 +74,7 @@
         "ExperimentalChannelOrganization": false,
         "EnableAPITeamDeletion": false,
         "ExperimentalEnableHardenedMode": false,
-        "DisableLegacyMFA": false,
+        "DisableLegacyMFA": true,
         "EnableEmailInvitations": false,
         "ExperimentalLdapGroupSync": false,
         "ExperimentalStrictCSRFEnforcement": false