windows-itpro-docs/windows/client-management/mdm/policy-csp-applicationdefaults.md

---
title: ApplicationDefaults Policy CSP
description: Learn more about the ApplicationDefaults Area in Policy CSP.
author: vinaypamnani-msft
manager: aaroncz
ms.author: vinpa
ms.date: 05/11/2023
ms.localizationpriority: medium
ms.prod: windows-client
ms.technology: itpro-manage
ms.topic: reference
---

<!-- Auto-Generated CSP Document -->

<!-- ApplicationDefaults-Begin -->
# Policy CSP - ApplicationDefaults

<!-- ApplicationDefaults-Editable-Begin -->
<!-- Add any additional information about this policy here. Anything outside this section will get overwritten. -->
<!-- ApplicationDefaults-Editable-End -->

<!-- DefaultAssociationsConfiguration-Begin -->
## DefaultAssociationsConfiguration

<!-- DefaultAssociationsConfiguration-Applicability-Begin -->
| Scope | Editions | Applicable OS |
|:--|:--|:--|
| ✅ Device <br> ❌ User | ✅ Pro <br> ✅ Enterprise <br> ✅ Education <br> ✅ Windows SE | ✅ Windows 10, version 1703 [10.0.15063] and later |
<!-- DefaultAssociationsConfiguration-Applicability-End -->

<!-- DefaultAssociationsConfiguration-OmaUri-Begin -->
```Device
./Device/Vendor/MSFT/Policy/Config/ApplicationDefaults/DefaultAssociationsConfiguration
```
<!-- DefaultAssociationsConfiguration-OmaUri-End -->

<!-- DefaultAssociationsConfiguration-Description-Begin -->
<!-- Description-Source-ADMX -->
This policy specifies the path to a file (e.g. either stored locally or on a network location) that contains file type and protocol default application associations. This file can be created using the DISM tool.

For example:

Dism.exe /Online /Export-DefaultAppAssociations:C:\AppAssoc.txt.

For more information, refer to the DISM documentation on TechNet.

If this group policy is enabled and the client machine is domain-joined, the file will be processed and default associations will be applied at logon time.

If the group policy isn't configured, disabled, or the client machine isn't domain-joined, no default associations will be applied at logon time.

If the policy is enabled, disabled, or not configured, users will still be able to override default file type and protocol associations.
<!-- DefaultAssociationsConfiguration-Description-End -->

<!-- DefaultAssociationsConfiguration-Editable-Begin -->
<!-- Add any additional information about this policy here. Anything outside this section will get overwritten. -->
<!-- DefaultAssociationsConfiguration-Editable-End -->

<!-- DefaultAssociationsConfiguration-DFProperties-Begin -->
**Description framework properties**:

| Property name | Property value |
|:--|:--|
| Format | `chr` (string) |
| Access Type | Add, Delete, Get, Replace |
<!-- DefaultAssociationsConfiguration-DFProperties-End -->

<!-- DefaultAssociationsConfiguration-GpMapping-Begin -->
**Group policy mapping**:

| Name | Value |
|:--|:--|
| Name | DefaultAssociationsConfiguration |
| Friendly Name | Set a default associations configuration file |
| Element Name | Default Associations Configuration File. |
| Location | Computer Configuration |
| Path | WindowsComponents > File Explorer |
| Registry Key Name | Software\Policies\Microsoft\Windows\System |
| ADMX File Name | WindowsExplorer.admx |
<!-- DefaultAssociationsConfiguration-GpMapping-End -->

<!-- DefaultAssociationsConfiguration-Examples-Begin -->
<!-- Add any examples for this policy here. Examples outside this section will get overwritten. -->
**Example**:

To create the SyncML, follow these steps:
<ol>
<li>Install a few apps and change your defaults.</li>
<li>From an elevated prompt, run "dism /online /export-defaultappassociations:appassoc.xml"</li>
<li>Take the XML output and put it through your favorite base64 encoder app.</li>
<li>Paste the base64 encoded XML into the SyncML</li>
</ol>

Here's an example output from the dism default association export command:
```xml
<?xml version="1.0" encoding="UTF-8"?>
<DefaultAssociations>
  <Association Identifier=".htm" ProgId="AppX4hxtad77fbk3jkkeerkrm0ze94wjf3s9" ApplicationName="Microsoft Edge" />
  <Association Identifier=".html" ProgId="AppX4hxtad77fbk3jkkeerkrm0ze94wjf3s9" ApplicationName="Microsoft Edge" />
  <Association Identifier=".pdf" ProgId="AppXd4nrz8ff68srnhf9t5a8sbjyar1cr723" ApplicationName="Microsoft Edge" />
  <Association Identifier="http" ProgId="AppXq0fevzme2pys62n3e0fbqa7peapykr8v" ApplicationName="Microsoft Edge" />
  <Association Identifier="https" ProgId="AppX90nv6nhay5n6a98fnetv7tpk64pp35es" ApplicationName="Microsoft Edge" />
</DefaultAssociations>
```

Here's the base64 encoded result:

``` syntax
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
```
Here's the SyncML example:

```xml
<?xml version="1.0" encoding="utf-8"?>
<SyncML xmlns="SYNCML:SYNCML1.1">
<SyncBody>
    <Replace>
      <CmdID>101</CmdID>
      <Item>
        <Meta>
          <Format>chr</Format>
          <Type>text/plain</Type>
        </Meta>
        <Target>
          <LocURI>./Vendor/MSFT/Policy/Config/ApplicationDefaults/DefaultAssociationsConfiguration</LocURI>
        </Target>
        <Data>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
</Data>
      </Item>
    </Replace>
  <Final/>
  </SyncBody>
</SyncML>
```
<!-- DefaultAssociationsConfiguration-Examples-End -->

<!-- DefaultAssociationsConfiguration-End -->

<!-- EnableAppUriHandlers-Begin -->
## EnableAppUriHandlers

<!-- EnableAppUriHandlers-Applicability-Begin -->
| Scope | Editions | Applicable OS |
|:--|:--|:--|
| ✅ Device <br> ❌ User | ✅ Pro <br> ✅ Enterprise <br> ✅ Education <br> ✅ Windows SE | ✅ Windows 10, version 1803 [10.0.17134] and later |
<!-- EnableAppUriHandlers-Applicability-End -->

<!-- EnableAppUriHandlers-OmaUri-Begin -->
```Device
./Device/Vendor/MSFT/Policy/Config/ApplicationDefaults/EnableAppUriHandlers
```
<!-- EnableAppUriHandlers-OmaUri-End -->

<!-- EnableAppUriHandlers-Description-Begin -->
<!-- Description-Source-ADMX -->
This policy setting determines whether Windows supports web-to-app linking with app URI handlers.

Enabling this policy setting enables web-to-app linking so that apps can be launched with a http(s) URI.

Disabling this policy disables web-to-app linking and http(s) URIs will be opened in the default browser instead of launching the associated app.

If you don't configure this policy setting, the default behavior depends on the Windows edition. Changes to this policy take effect on reboot.
<!-- EnableAppUriHandlers-Description-End -->

<!-- EnableAppUriHandlers-Editable-Begin -->
<!-- Add any additional information about this policy here. Anything outside this section will get overwritten. -->
<!-- EnableAppUriHandlers-Editable-End -->

<!-- EnableAppUriHandlers-DFProperties-Begin -->
**Description framework properties**:

| Property name | Property value |
|:--|:--|
| Format | `int` |
| Access Type | Add, Delete, Get, Replace |
| Default Value  | 1 |
<!-- EnableAppUriHandlers-DFProperties-End -->

<!-- EnableAppUriHandlers-AllowedValues-Begin -->
**Allowed values**:

| Value | Description |
|:--|:--|
| 0 | Disabled. |
| 1 (Default) | Enabled. |
<!-- EnableAppUriHandlers-AllowedValues-End -->

<!-- EnableAppUriHandlers-GpMapping-Begin -->
**Group policy mapping**:

| Name | Value |
|:--|:--|
| Name | EnableAppUriHandlers |
| Friendly Name | Configure web-to-app linking with app URI handlers |
| Location | Computer Configuration |
| Path | System > Group Policy |
| Registry Key Name | Software\Policies\Microsoft\Windows\System |
| Registry Value Name | EnableAppUriHandlers |
| ADMX File Name | GroupPolicy.admx |
<!-- EnableAppUriHandlers-GpMapping-End -->

<!-- EnableAppUriHandlers-Examples-Begin -->
<!-- Add any examples for this policy here. Examples outside this section will get overwritten. -->
<!-- EnableAppUriHandlers-Examples-End -->

<!-- EnableAppUriHandlers-End -->

<!-- ApplicationDefaults-CspMoreInfo-Begin -->
<!-- Add any additional information about this CSP here. Anything outside this section will get overwritten. -->
<!-- ApplicationDefaults-CspMoreInfo-End -->

<!-- ApplicationDefaults-End -->

## Related articles

[Policy configuration service provider](policy-configuration-service-provider.md)