diff --git a/tests/backoffice_pages/test_all.py b/tests/backoffice_pages/test_all.py
index c99e2fcd8..b927c0699 100644
--- a/tests/backoffice_pages/test_all.py
+++ b/tests/backoffice_pages/test_all.py
@@ -21,6 +21,7 @@ from wcs.qommon.http_request import HTTPRequest
 from wcs.qommon.ident.password_accounts import PasswordAccount
 from wcs.qommon.upload_storage import PicklableUpload
 from wcs.roles import logged_users_role
+from wcs.sql_criterias import Contains
 from wcs.wf.create_formdata import Mapping
 from wcs.wf.form import WorkflowFormFieldsFormDef
 from wcs.wf.register_comment import JournalEvolutionPart
@@ -1243,6 +1244,66 @@ def test_backoffice_multi_actions_interactive_create_carddata(pub):
     }
 
 
+def test_backoffice_multi_actions_interactive_file_field(pub):
+    user = create_superuser(pub)
+
+    workflow = Workflow.get_default_workflow()
+    workflow.id = '2'
+    action = workflow.add_global_action('FOOBAR')
+
+    form_action = action.add_action('form')
+    form_action.varname = 'blah'
+    form_action.formdef = WorkflowFormFieldsFormDef(item=form_action)
+    form_action.formdef.fields.append(fields.FileField(id='1', label='Test', varname='test', required=True))
+    form_action.hide_submit_button = False
+
+    trigger = action.triggers[0]
+    trigger.roles = [x.id for x in pub.role_class.select() if x.name == 'foobar']
+    form_action.by = trigger.roles
+    workflow.store()
+
+    formdef = FormDef()
+    formdef.name = 'test multi actions interactive file field'
+    formdef.fields = []
+    formdef.workflow_roles = {'_receiver': user.roles[0]}
+    formdef.workflow = workflow
+    formdef.store()
+
+    for i in range(10):
+        formdata = formdef.data_class()()
+        formdata.just_created()
+        formdata.jump_status('new')
+        formdata.store()
+
+    app = login(get_app(pub))
+    resp = app.get(formdef.get_url(backoffice=True))
+    assert 'id="multi-actions"' in resp.text  # always there
+
+    resp = app.get(formdef.get_url(backoffice=True) + '?limit=20&order_by=id')
+    ids = []
+    for checkbox in resp.forms[0].fields['select[]'][1:6]:
+        ids.append(checkbox._value)
+        checkbox.checked = True
+
+    resp = resp.forms[0].submit('button-action-1')
+    assert '/actions/' in resp.location
+    resp = resp.follow()
+    assert '5 selected forms' in resp.text
+    resp.form['fblah_1$file'] = Upload('test3.txt', b'foobar3', 'text/plain')
+    resp = resp.form.submit('submit')
+
+    assert '?job=' in resp.location
+    resp = resp.follow()
+    assert 'Executing task "FOOBAR" on forms' in resp.text
+    assert '>completed<' in resp.text
+
+    for formdata in formdef.data_class().select([Contains('id', ids)]):
+        assert (
+            formdata.get_substitution_variables()['form'].workflow_form.blah.var.test.raw.get_content()
+            == b'foobar3'
+        )
+
+
 def test_backoffice_map(pub):
     create_user(pub)
     create_environment(pub)
diff --git a/wcs/qommon/form.py b/wcs/qommon/form.py
index 2bd0e7c4b..f4f73f909 100644
--- a/wcs/qommon/form.py
+++ b/wcs/qommon/form.py
@@ -933,15 +933,19 @@ class FileWithPreviewWidget(CompositeWidget):
 
     def set_value_from_token(self, request):
         self.value = None
-        if self.get('token'):
+        if self.get('token') and get_session():
             token = self.get('token')
-        elif self.get('file'):
+        elif self.get('file') and get_session():
             try:
                 token = get_session().add_tempfile(self.get('file'), storage=self.storage)['token']
             except UploadStorageError:
                 self.set_error(_('failed to store file (system error)'))
                 return
             request.form[self.get_widget('token').get_name()] = token
+        elif self.get('file') and not get_session():
+            # a file field in a global interactive form being run in an afterjob
+            self.value = self.get('file')
+            return
         else:
             token = None
 
@@ -977,6 +981,9 @@ class FileWithPreviewWidget(CompositeWidget):
         if isinstance(self.value.fp, io.BufferedRandom):
             # internally recreated file, trust supplied MIME type
             filetype = self.value.content_type
+        elif not get_session() and isinstance(self.value.fp, io.BytesIO):
+            # a file field in a global interactive form being run in an afterjob
+            filetype = self.value.content_type
         elif magic and self.value.fp:
             mime = magic.Magic(mime=True)
             filetype = mime.from_file(self.value.fp.name)