Example is the inbox showing 300 plus emails and after setting up the account and manually syncing the account produced only a handful of emails, even after telling the app to download all mail from anytime. I ran across a similar problem with the Mail app, where the app simply will not sync past messages from 3rd party email providers. Side note, apparently many of the newer 'universal apps' are not very backwards compatible with previous versions of the modern apps counterparts under Windows 7. Check the folders permissions under the folders properties and make sure your user account (user PCname/user) is the owner and has full access.
It could be your local user account does not have access to the folder where the data you want to access is stored. The info is for Windows 7 so the instructions might be a bit different but it does mention taking ownership of specific folders and reveals the location of where fax data (system side) is saved to. The topic is here: How to transfer fax and scan data from one user profile to another. Below is the only link I could find that may have a solution for you. However I looked around on the internet to see if anyone has posted about this issue or one similar to it. I have not used the fax and scan feature in Windows 10 yet, no reason to us it. Hello keithjr and welcome to Windows 10 forums.
