If you are using Windows 10 Anniversary Update (build 1607) or later, or Windows Server 2016/2019/2022, Power Desktop can read and write files with paths that exceed 260 characters via Windows' native long file path support.
To enable long paths in Windows 10/11
Open the Start menu, type "gpedit.msc", and select Edit group policy from the search results to open the Local Group Policy Editor.
In the sidebar, expand Computer Configuration → Administrative Templates → System, and select Filesystem.
In the right-hand pane under Settings, double-click Enable Win32 long paths.
At the top-left corner of the configuration dialog, select Enabled.
Click OK to save your change.
Note: When exporting documents, Power Desktop cannot create a ZIP archive of the export folder if the any files in the folder have a full path that exceeds 260 characters.
Enabling Long paths in Windows Server 2016/2019/2022
Follow the directions to enable a GPO for long file paths from this blog post:
https://www.saotn.org/enable-ntfs-long-paths-gpo-windows-server/