Windows 10: links for emails nor pdf preview not working in windows 10

Since the update, if I click on a link to send an email my Outlook does not work and the error message is " Only one version of Outlook can be open at the same time."

The pdf thumbnail preview does not work either.

:)

 

preview of pdf attachements in emails

When attaching a pdf file to an email using Gmail, I am getting a message "This file can't be previewed." In my preview pane. I used to be able to preview all email attachments before adding them. Other types of file (jpeg, exl, png, etc.) show in the
preview pane but not pdf files. The preview still works when I use my laptop but it is not working now on my desk top computer.

 

pdf preview in Windows 10 file explorer

thanks for suggestion. i tried both, but neither worked. even with using Edge as pdf reader, and resetting and restarting, pdf previews in explorer, regardless of which default pdf viewer used, resulted in very small window in preview pane.

 

Preview PDF's not working

In Windows 10 PDF files will not show a preview in the preview pane.
I have uninstalled and reinstalled Adobe DC and Adobe 11, I have also reset preferences on multiple occasions.
I have done a clean install of Windows 10.
I have also set Edge as the preferred program to view PDFs without Adobe being installed
For each of the above options the preview pane works for a short time and then reverts to not working, this problem only presents with PDFs, other documents such as images and Word documents will preview.
Please help, thanks