<update> element (Office development in Visual Studio)
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
The update element specifies the interval at which the solution will check for updates.
Syntax
<update
enabled>
<expiration
maximumAge
unit
/>
</update>
Elements and attributes
The update element is required and is in the vstav3 namespace.
The update element has the following attributes.
| Attribute | Description |
|---|---|
enabled |
Required. Set enabled to one of the following values: - true to check for updates. - false to prevent checking for updates. |
The update element has the following child elements.
expiration
The expiration element is required and is in the vstav3 namespace. This element specifies the interval at which the solution checks for updates.
The expiration element has the following attributes.
| Attribute | Description |
|---|---|
maximumAge |
Required. Set this equal to an integer. |
unit |
Required. Set unit to one of the following values:- hours - days - weeks |
Example of always checking for updates
Description
The following code example illustrates an update element that is set to always check for updates in Office solutions.
Code
<vstav3:update enabled="true" />
Example of setting a default update interval
Description
The following code example illustrates an update element in an application manifest for Office solutions. This code example is part of a larger example provided in Application manifests for Office solutions.
Code
<vstav3:update enabled="true">
<vstav3:expiration maximumAge="7" unit="days" />
</vstav3:update>