How to check if your SharePoint client ID/secret is expired
Any Client ID (or App ID) and client secret registered through SharePoint Online’s /_layouts/15/AppRegNew.aspx has a validity of 1 year.
If your SharePoint client ID/secret has expired, you may be experiencing issues such as trying to set your SharePoint as an output destination for a Scan2x job and not being able to move past the Trust modal.
In order to check whether the client ID/secret has expired, you must be the owner of the SharePoint site.
Kindly follow the steps below:
1.Open Powershell as administrator
2.Run Install-Module MSOnline
3.Run Import-Module MSOnline
4.Run Connect-MsolService
5.Run (Get-MsolServicePrincipalCredential -AppPrincipalId [Enter App GUID] -ReturnKeyValues $true).EndDate.ToShortDateString() | select
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