diff --git a/admin/roles/assign.php b/admin/roles/assign.php
index c542943da30d5..82e07a5f72dcc 100644
--- a/admin/roles/assign.php
+++ b/admin/roles/assign.php
@@ -61,6 +61,7 @@
 }
 $PAGE->set_url($pageurl);
 $PAGE->set_context($context);
+$PAGE->activityheader->disable();
 
 $contextname = $context->get_context_name();
 $courseid = $course->id;
diff --git a/admin/roles/check.php b/admin/roles/check.php
index 631085ab7a7e9..daa2ccca6d80f 100644
--- a/admin/roles/check.php
+++ b/admin/roles/check.php
@@ -87,6 +87,7 @@
     $PAGE->blocks->show_only_fake_blocks(true);
 }
 $PAGE->set_title($title);
+$PAGE->activityheader->disable();
 
 switch ($context->contextlevel) {
     case CONTEXT_SYSTEM:
diff --git a/admin/roles/permissions.php b/admin/roles/permissions.php
index dfd6547a00b6d..773c3fc397e4e 100644
--- a/admin/roles/permissions.php
+++ b/admin/roles/permissions.php
@@ -97,6 +97,7 @@
 }
 
 $PAGE->set_title($title);
+$PAGE->activityheader->disable();
 switch ($context->contextlevel) {
     case CONTEXT_SYSTEM:
         print_error('cannotoverridebaserole', 'error');
diff --git a/backup/backup.php b/backup/backup.php
index c68bbfa98828c..80968967d5cff 100644
--- a/backup/backup.php
+++ b/backup/backup.php
@@ -107,6 +107,7 @@
 
 $PAGE->set_title($heading);
 $PAGE->set_heading($heading);
+$PAGE->activityheader->disable();
 
 if (empty($cancel)) {
     // Do not print the header if user cancelled the process, as we are going to redirect the user.
diff --git a/backup/restorefile.php b/backup/restorefile.php
index eef560bf06ca4..6351918868d2d 100644
--- a/backup/restorefile.php
+++ b/backup/restorefile.php
@@ -114,6 +114,7 @@
 $PAGE->set_title(get_string('course') . ': ' . $coursefullname);
 $PAGE->set_heading($heading);
 $PAGE->set_pagelayout('admin');
+$PAGE->activityheader->disable();
 $PAGE->requires->js_call_amd('core_backup/async_backup', 'asyncBackupAllStatus', array($context->id));
 
 $form = new course_restore_form(null, array('contextid'=>$contextid));
diff --git a/course/modedit.php b/course/modedit.php
index 71cc3102df1a0..c4de83c75a9f3 100644
--- a/course/modedit.php
+++ b/course/modedit.php
@@ -200,6 +200,7 @@
     if (isset($navbaraddition)) {
         $PAGE->navbar->add($navbaraddition);
     }
+    $PAGE->activityheader->disable();
 
     echo $OUTPUT->header();
 
diff --git a/filter/manage.php b/filter/manage.php
index bff72f847a0f6..0b6b6752818c4 100644
--- a/filter/manage.php
+++ b/filter/manage.php
@@ -123,6 +123,7 @@
 $PAGE->set_cacheable(false);
 $PAGE->set_title($title);
 $PAGE->set_pagelayout('admin');
+$PAGE->activityheader->disable();
 echo $OUTPUT->header();
 
 /// Print heading.
diff --git a/lib/outputrenderers.php b/lib/outputrenderers.php
index 8d55c21e5abad..b478e9566b3af 100644
--- a/lib/outputrenderers.php
+++ b/lib/outputrenderers.php
@@ -2907,6 +2907,8 @@ public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginf
             //$this->page->set_pagelayout('base'); //TODO: MDL-20676 blocks on error pages are weird, unfortunately it somehow detect the pagelayout from URL :-(
             $this->page->set_title(get_string('error'));
             $this->page->set_heading($this->page->course->fullname);
+            // No need to display the activity header when encountering an error.
+            $this->page->activityheader->disable();
             $output .= $this->header();
         }
 
diff --git a/lib/portfoliolib.php b/lib/portfoliolib.php
index 33cdbe542233b..e2201d06e321d 100644
--- a/lib/portfoliolib.php
+++ b/lib/portfoliolib.php
@@ -1117,7 +1117,10 @@ function portfolio_export_pagesetup($PAGE, $caller) {
 
     // and now we know the course for sure and maybe the cm, call require_login with it
     require_login($PAGE->course, false, $cm);
-
+    $PAGE->activityheader->set_attrs([
+        'description' => '',
+        'hidecompletion' => true
+    ]);
     foreach ($extranav as $navitem) {
         $PAGE->navbar->add($navitem['name']);
     }