---
sourceDocument: Australia Mobile Configuration and Navigation
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/mobile

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia Mobile Configuration and Navigation

ft:clusterId :

    - mobile

bundleId :

    - mobile

workflow :

    - Development, Data and Analytics


---

# Android attachment viewing

# Control whether users can view attachments in external applications on Android devices {#ariaid-title1}

* Release version: Australia
* 
* Updated March 12, 2026
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

Set the glide.sg.block_mobile_attachments_external_viewing system property to true to prevent Android users from opening attachments in third-party applications.

## Before you begin

Role required: admin

## About this task

When glide.sg.block_mobile_attachments_external_viewing system property is set to <kbd class="ph userinput">true</kbd>, all attachments that are supported to be opened in the internal native viewer are opened
there so the user can't open the attachment in a third-party application.  
Note:  
This system property only applies to Android devices and has no effect on iOS devices. The glide.sg.block_mobile_attachments_external_viewing system property is available to use on Android clients, version 19.5.1 and later.  
The supported file types that can be opened in the internal, native viewer on the Android OS are:

* Images
* Videos
* PDFs
{#vu-attach-extapp-android__ul_iyy_wjf_kfc}

When a user attempts to open an attachment that isn't supported, an error message displays. For example:

Note:  
The following supported file types can be opened in the internal, native viewer on iOS devices:

* iWork and Microsoft Office documents
* Images
* Live photos
* Text files
* PDFs
* Audio files
* Video files

{#vu-attach-extapp-android__ul_cfg_hkf_kfc}

However, the glide.sg.block_mobile_attachments_external_viewing property has no effect on iOS devices.

## Procedure

1. Navigate to Allsys_properties.list.
2. Open the record for glide.sg.block_mobile_attachments_external_viewing.
3. In the form, match the following values.  
   {#vu-attach-extapp-android__table_cc5_zlf_kfc__entry__2}

   | Field | Description |
   |-|-|
   | Name | glide.sg.block_mobile_attachments_external_viewing |
   | Type | true \| false |
   | Value | Enter one of the following values: * Enter <kbd class="ph userinput">true</kbd> to prevent users from opening attachments in third-party applications on Android devices. The following attachments can only be opened in the internal native viewer: images, videos, and PDFs. * Enter <kbd class="ph userinput">false</kbd> to enable users to open files in third-party applications on Android devices. {#vu-attach-extapp-android__ul_gg1_fmf_kfc} |
   [ ]

   {#vu-attach-extapp-android__table_cc5_zlf_kfc}
4. Right-click the banner at the top of the glide.sg.block_mobile_attachments_external_viewing form and select Save.

*[\>]: and then