diff --git a/lib/kadm5/init_c.c b/lib/kadm5/init_c.c
index 8c330456a..91e03ada1 100644
--- a/lib/kadm5/init_c.c
+++ b/lib/kadm5/init_c.c
@@ -372,8 +372,10 @@ _kadm5_c_get_cred_cache(krb5_context context,
             char userbuf[128];
 	    const char *user = NULL;
 
+#ifndef WIN32
             if (geteuid() == 0)
                 user = roken_get_loginname(userbuf, sizeof(userbuf));
+#endif
             if (user == NULL)
                 user = roken_get_username(userbuf, sizeof(userbuf));
 	    if (user == NULL) {
diff --git a/lib/krb5/get_default_principal.c b/lib/krb5/get_default_principal.c
index 838c8afa8..35480740f 100644
--- a/lib/krb5/get_default_principal.c
+++ b/lib/krb5/get_default_principal.c
@@ -53,8 +53,10 @@ _krb5_get_default_principal_local (krb5_context context,
      *       order, otherwise we won't figure out to output
      *       <username>/root@DEFAULT_REALM.
      */
+#ifndef WIN32
     if (geteuid() == 0)
         user = roken_get_loginname(userbuf, sizeof(userbuf));
+#endif
     if (user == NULL)
         user = roken_get_username(userbuf, sizeof(userbuf));
     if (user == NULL) {