diff --git a/ChangeLog b/ChangeLog
index 0bc98e23ce..ee85d825e4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -36,6 +36,9 @@ phpMyAdmin - ChangeLog
 - issue        Fixed possible "Undefined index: clause_is_unique" on replace value in cell
 - issue #16991 Fixed case where $_SERVER['REQUEST_METHOD'] is undefined
 - issue        Fixed configuration error handler registration
+- issue #16997 Fixed server variables get/set value not working on multi server server > 1
+- issue #16998 Fixed Multi table query submit on server > 1 logged out user
+- issue #17000 Fixed Multi edit on central columns on server > 1 logged out user
 
 5.1.1 (2021-06-04)
 - issue #13325 Fixed created procedure shows up in triggers and events and vice-versa
diff --git a/js/src/database/central_columns.js b/js/src/database/central_columns.js
index 7c53cef824..f31c832ae1 100644
--- a/js/src/database/central_columns.js
+++ b/js/src/database/central_columns.js
@@ -64,7 +64,7 @@ AJAX.registerOnload('database/central_columns.js', function () {
             return false;
         }
         var argsep = CommonParams.get('arg_separator');
-        var editColumnData = editColumnList + '' + argsep + 'edit_central_columns_page=true' + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'db=' + encodeURIComponent(CommonParams.get('db'));
+        var editColumnData = editColumnList + '' + argsep + 'edit_central_columns_page=true' + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'db=' + encodeURIComponent(CommonParams.get('db')) + argsep + 'server=' + CommonParams.get('server');
         Functions.ajaxShowMessage();
         AJAX.source = $(this);
         $.post('index.php?route=/database/central-columns', editColumnData, AJAX.responseHandler);
@@ -73,7 +73,7 @@ AJAX.registerOnload('database/central_columns.js', function () {
         event.preventDefault();
         event.stopPropagation();
         var argsep = CommonParams.get('arg_separator');
-        var multiColumnEditData = $('#multi_edit_central_columns').serialize() + argsep + 'multi_edit_central_column_save=true' + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'db=' + encodeURIComponent(CommonParams.get('db'));
+        var multiColumnEditData = $('#multi_edit_central_columns').serialize() + argsep + 'multi_edit_central_column_save=true' + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'db=' + encodeURIComponent(CommonParams.get('db')) + argsep + 'server=' + CommonParams.get('server');
         Functions.ajaxShowMessage();
         AJAX.source = $(this);
         $.post('index.php?route=/database/central-columns', multiColumnEditData, AJAX.responseHandler);
diff --git a/js/src/database/multi_table_query.js b/js/src/database/multi_table_query.js
index c8fa22ae74..7c787c3448 100644
--- a/js/src/database/multi_table_query.js
+++ b/js/src/database/multi_table_query.js
@@ -127,6 +127,7 @@ AJAX.registerOnload('database/multi_table_query.js', function () {
             'db': $('#db_name').val(),
             'sql_query': query,
             'ajax_request': '1',
+            'server': CommonParams.get('server'),
             'token': CommonParams.get('token')
         };
         $.ajax({
diff --git a/js/src/server/variables.js b/js/src/server/variables.js
index ddc8faf4da..6dca0a210e 100644
--- a/js/src/server/variables.js
+++ b/js/src/server/variables.js
@@ -46,6 +46,7 @@ AJAX.registerOnload('server/variables.js', function () {
             var $msgbox = Functions.ajaxShowMessage(Messages.strProcessingRequest);
             $.post('index.php?route=/server/variables/set/' + encodeURIComponent(varName), {
                 'ajax_request': true,
+                'server': CommonParams.get('server'),
                 'varValue': $valueCell.find('input').val()
             }, function (data) {
                 if (data.success) {
@@ -73,7 +74,8 @@ AJAX.registerOnload('server/variables.js', function () {
         });
 
         $.get('index.php?route=/server/variables/get/' + encodeURIComponent(varName), {
-            'ajax_request': true
+            'ajax_request': true,
+            'server': CommonParams.get('server')
         }, function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 var $links = $('<div></div>')