Based on this solution to convert .xls to .xlsx, is there a way to convert .doc to docx within SharePoint Online?
We migrated a lot of files and folders from NTFS folders to SharePoint online but did not have the time to convert the files beforehand.
Thanking you in advance, Andrew
You can repurpose the script to convert doc to docx's. Essentially this should be the logic of the script.
Connect to SharePoint and get all "doc" items that need converting (this can be done using CAML query or get all list items and use where clause in PowerShell
Iterate over each document (foreach loop) and download a local copy in a temp folder for conversion
Convert the document from doc to docx (see code sample below) and upload the file back to SharePoint after this you can delete the original doc file from SharePoint
if ($currentFile.Extension -like ".doc*") { [ref]$SaveFormat = "microsoft.office.interop.word.WdSaveFormat" -as [type] $word = New-Object -ComObject word.application $word.visible = $false $doc = $word.documents.open($currentFile.fullname) $path = ($currentFile.fullname).substring(0,($currentFile.fullname).lastindexOf(".")) $doc.saveas([ref] $path, [ref]$SaveFormat::wdFormatDocumentDefault) $doc.close() $word.Quit() $word = $null [gc]::collect() [gc]::WaitForPendingFinalizers() } 
