Jump to content

Outlook Trustworthy Sources PDF

Cheryl Runkel

Recommended Posts

Cheryl Runkel


When trying to open PDF attachments in Outlook, I constantly receive this prompt:

"You should only open attachments from a trustworthy source."

I have already tried (in admin mode) selecting to not ask again, but it will keep returning. I have also tried disabling/removing the Nitro add-in and changing the load behavior in Regedit from 3 to 0 to stop it from reappearing as an Outlook add-in. I need a resolution to this prompt.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.