As an administrator, you will be faced with troubleshooting a broken site. Often, changes and customizations by developers or administrators lead to problems that may not be evident immediately. Often, issues are not addressed until a breaking change is found during an upgrade. The first of the tools at our disposal to help us in troubleshooting is the Test-SPOSite command.
The command allows you to check several rules against your site collection, producing a report that will help you to take action. By default, the command will return a result with an array of all the rules tested and individual results:
Test-SPOSite -Identity $siteUrlSiteUrl : https://mytest321.sharepoint.com/sites/testA1Results : { SPSiteHealthResult ...
