
This was a solution found in one of the Microsoft forums
CODE
After some testing, I’ve discovered that if on the emails that don’t print the headers you first switch to landscape mode, they will print the headers correctly. To do this:
1. Click on File and choose Page Setup
2. Choose Memo Style
3. Select the radio button for Landscape
4. Click OK
This setting will be for this email only and only until you close it. The default setting will still be Portrait for other emails. This will at least let you print the missing header information on these random emails until Microsoft releases an official fix for it.