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

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Policy CSP - ApplicationDefaults	Policy CSP - ApplicationDefaults	maricia	article	w10	windows	nickbrower

Policy CSP - ApplicationDefaults

Warning

Some information relates to prereleased product which may be substantially modified before it's commercially released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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ApplicationDefaults policies

ApplicationDefaults/DefaultAssociationsConfiguration

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Added in Windows 10, version 1703. This policy allows an administrator to set default file type and protocol associations. When set, default associations will be applied on sign-in to the PC. The association file can be created using the DISM tool (dism /online /export-defaultappassociations:appassoc.xml), and then needs to be base64 encoded before being added to SyncML.

If policy is enabled and the client machine is Azure Active Directory joined, the associations assigned in SyncML will be processed and default associations will be applied.

To create create the SyncML, follow these steps:

1. Install a few apps and change your defaults.
2. From an elevated prompt, run "dism /online /export-defaultappassociations:appassoc.xml"
3. Take the XML output and put it through your favorite base64 encoder app.
4. Paste the base64 encoded XML into the SyncML

Here is an example output from the dism default association export command:

<?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 is the base64 encoded result:

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

Here is the SyncMl example:

<?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>

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Footnote:

• 1 - Added in Windows 10, version 1607.
• 2 - Added in Windows 10, version 1703.
• 3 - Added in Windows 10, version 1709.

ApplicationDefaults policies supported by Microsoft Surface Hub

• ApplicationDefaults/DefaultAssociationsConfiguration