Hi @M Usman Siddiqui,
If you want to use Sharepoint's Rest API to read a file in sharepoint. You will need register a SharePoint app only first. Please refer to the following steps to register a sharepoint app first in the document
Then you can use the client id and secret to connect sharepoint with pnp powershell and use
Invoke-PnPSPRestMethod to call rest api
#Site collection URL $SiteURL = "https://crescent.sharepoint.com/sites/xxx" #Connect to SharePoint Online with ClientId and ClientSecret Connect-PnPOnline -Url $SiteURL -ClientId "yourclientid" -ClientSecret "yoursecret" $output = Invoke-PnPSPRestMethod -Url '/_api/web/lists?$select=Id,Title' $output.value
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