Apply Microsoft-provided site template to a site with PowerShell

Question

Microsoft published an update MC294082, which says "Now you have the choice to use SharePoint PowerShell cmdlets to decide which Microsoft-provided site templates will be displayed or hidden when viewing the site template gallery" with Set-SPOBuiltInSiteTemplateSettings.

Is there a way to apply any of Microsoft-provided site templates (Built In Site Templates) to a site with PowerShell? Invoke-SPOSiteDesign with Built-In Site Template Id fails with Invoke-SPOSiteDesign : File Not Found. error message.

Answer 1

You could use Invoke-SPOSiteDesign to apply site design on existing site. Please make sure the ID you used is correct.

PowerShell commands:

#Set Parameters
$AdminCenterURL = "https://xxx-admin.sharepoint.com/"
$SiteURL = "https://xxx.sharepoint.com/sites/xxx"
$SiteDesignId = "xxxxxx"
 
#Connect to SharePoint Online
Connect-SPOService -Url $AdminCenterURL -Credential (Get-Credential)
 
#Apply Site Design
Invoke-SPOSiteDesign -Identity $SiteDesignId -WebUrl $SiteURL

For Reference: SharePoint Online: Create Site Design and Site Scripts using PowerShell

Answer 2

the existing PnP PowerShell and SPO Management shell don't allow you to apply OOTB Site Design template to a site collection. If you want to apply OOTB site design template to a site collection, you can use REST API with following syntax:

Property	Value
Method	POST
Url	https://{{r_siteUrl}}/_api/Microsoft.SharePoint.Utilities.WebTemplateExtensions.SiteScriptUtility.ApplySiteDesign
Body	{ "siteDesignId": "{{r_sitedesignId}}", "webUrl": "{{r_targetSiteUrl}}", "store":1 }
Description	r_siteUrl: the site collection you want to run REST API r_sitedesignid: this is OOTB site design template id which can get from Set-SPOBuiltInSiteTemplateSettings r_targetSiteUrl: the site collection Url you want to apply to. r_siteUrl and r_targetSiteUrl can be a same site collection