diff --git a/NEWS b/NEWS
index f385276b8..e7dee6926 100644
--- a/NEWS
+++ b/NEWS
@@ -35,6 +35,7 @@ Bug fixes
  - [web] handle URI in vCard photos (#2683)
  - [web] handle semicolon in values during LDIF import (#1760)
  - [web] fixed computation of week number (#3973, #3976)
+ - [web] fixed saving of inactive calendars (#3862, #3980)
  - [eas] properly skip folders we don't want to synchronize (#3943)
  - [eas] fixed 30 mins freebusy offset with S Planner
  - [eas] now correctly handles reminders on tasks (#3964)
diff --git a/UI/Common/UIxParentFolderActions.m b/UI/Common/UIxParentFolderActions.m
index 6669e3e71..e98c55061 100644
--- a/UI/Common/UIxParentFolderActions.m
+++ b/UI/Common/UIxParentFolderActions.m
@@ -20,12 +20,15 @@
 
 
 #import <NGObjWeb/NSException+HTTP.h>
-#import <NGObjWeb/WOContext.h>
+#import <NGObjWeb/WOContext+SoObjects.h>
 #import <NGObjWeb/WOResponse.h>
 #import <NGObjWeb/WORequest.h>
 
 #import <SoObjects/SOGo/SOGoParentFolder.h>
+#import <SoObjects/SOGo/SOGoUser.h>
+#import <SoObjects/SOGo/SOGoUserSettings.h>
 
+#import <SOGo/NSArray+Utilities.h>
 #import <SOGo/NSDictionary+Utilities.h>
 #import <SOGo/NSString+Utilities.h>
 
@@ -91,4 +94,49 @@
   return response;
 }
 
+- (WOResponse *) saveFoldersActivationAction
+{
+  NSDictionary *params;
+  NSEnumerator *foldersEnumerator;
+  NSMutableArray *folderSubscription;
+  NSMutableDictionary *moduleSettings;
+  NSString *baseFolder, *folderName;
+  SOGoParentFolder *clientObject;
+  SOGoUser *activeUser;
+  SOGoUserSettings *us;
+  WORequest *request;
+  BOOL makeActive;
+
+  request = [context request];
+  params = [[request contentAsString] objectFromJSONString];
+  activeUser = [context activeUser];
+  clientObject = [self clientObject];
+  baseFolder = [clientObject nameInContainer];
+  us = [activeUser userSettings];
+  moduleSettings = [us objectForKey: baseFolder];
+  if (!moduleSettings)
+    moduleSettings = [NSMutableDictionary dictionary];
+  [us setObject: moduleSettings forKey: baseFolder];
+  folderSubscription = [moduleSettings objectForKey: @"InactiveFolders"];
+  if (!folderSubscription)
+    {
+      folderSubscription = [NSMutableArray array];
+      [moduleSettings setObject: folderSubscription forKey: @"InactiveFolders"];
+    }
+
+  foldersEnumerator = [params keyEnumerator];
+  while ((folderName = [foldersEnumerator nextObject]))
+    {
+      makeActive = [[params objectForKey: folderName] boolValue];
+      if (makeActive)
+        [folderSubscription removeObject: folderName];
+      else
+        [folderSubscription addObjectUniquely: folderName];
+    }
+  [us synchronize];
+
+  return [self responseWith204];
+}
+
+
 @end
diff --git a/UI/Common/product.plist b/UI/Common/product.plist
index ff78c1f53..c8b7a62b2 100644
--- a/UI/Common/product.plist
+++ b/UI/Common/product.plist
@@ -78,6 +78,11 @@
           actionClass = "UIxParentFolderActions";
           actionName = "createFolder";
         };
+        saveFoldersActivation = {
+          protectedBy = "Change Images And Files";
+          actionClass = "UIxParentFolderActions";
+          actionName = "saveFoldersActivation";
+        };
       };
     };
     SOGoFolder = {
diff --git a/UI/WebServerResources/js/Scheduler/Calendar.service.js b/UI/WebServerResources/js/Scheduler/Calendar.service.js
index 87cfd566f..398f31f1d 100644
--- a/UI/WebServerResources/js/Scheduler/Calendar.service.js
+++ b/UI/WebServerResources/js/Scheduler/Calendar.service.js
@@ -94,7 +94,6 @@
       list = this.$calendars;
 
     sibling = _.findIndex(list, function(o, i) {
-      console.debug(i + ': "' + o.id + '".localeCompare("' + calendar.name + '") = ' + o.name.localeCompare(calendar.name));
       return (calendar.id == 'personal' ||
               (o.id != 'personal' && o.name.localeCompare(calendar.name) > 0));
     });
@@ -325,6 +324,24 @@
     return Calendar.$q.all(promises);
   };
 
+  /**
+   * @function saveFoldersActivation
+   * @memberof Calendar
+   * @desc Save to the user's settings the activation state of the calendars
+   * @param {string[]} folders - the folders IDs
+   * @returns a promise of the HTTP operation
+   */
+  Calendar.saveFoldersActivation = function(ids) {
+    var request = {};
+
+    _.forEach(ids, function(id) {
+      var calendar = Calendar.$get(id);
+      request[calendar.id] = calendar.active;
+    });
+
+    return Calendar.$$resource.post(null, 'saveFoldersActivation', request);
+  };
+
   /**
    * @function saveFoldersOrder
    * @desc Save to the user's settings the current calendars order.
diff --git a/UI/WebServerResources/js/Scheduler/CalendarsController.js b/UI/WebServerResources/js/Scheduler/CalendarsController.js
index 15fbecf65..fc588e695 100644
--- a/UI/WebServerResources/js/Scheduler/CalendarsController.js
+++ b/UI/WebServerResources/js/Scheduler/CalendarsController.js
@@ -58,7 +58,7 @@
         );
       },
       function(newList, oldList) {
-        var commonList, ids, promises;
+        var commonList, ids, promise;
 
         // Identify which calendar has changed
         commonList = _.intersectionBy(newList, oldList, 'id');
@@ -66,17 +66,14 @@
           var oldObject = _.find(oldList, { id: o.id });
           return !_.isEqual(o, oldObject);
         }), 'id');
-        promises = [];
+        promise = Calendar.$q.when();
 
         if (ids.length > 0) {
           $log.debug(ids.join(', ') + ' changed');
-          _.forEach(ids, function(id) {
-            var calendar = Calendar.$get(id);
-            promises.push(calendar.$setActivation());
-          });
+          promise = Calendar.saveFoldersActivation(ids);
         }
-        if (promises.length > 0 || commonList.length != newList.length || commonList.length != oldList.length)
-          Calendar.$q.all(promises).then(function() {
+        if (ids.length > 0 || commonList.length != newList.length || commonList.length != oldList.length)
+          promise.then(function() {
             $rootScope.$emit('calendars:list');
           });
       },