UserAgent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36

Example URL:

Steps to reproduce the problem:
1. Open up a SharePoint site and find an MS Office document
2. Try to preview the document and you get an error
3. Try to export a SharePoint list to Excel and you get an error.

What is the expected behavior?
When clicking on the preview of the office document it should load in a pane using the Office Web Apps. 

When export a SharePoint list to Excel it should open Excel and load the data in the sheet.

What went wrong?
The error displayed in the preview pane. 
The webpage at https://oos.domain.net/x/_layouts/xlpreview.aspx?ui=en-US&rs=en-US&WOPISrc=https%3A%2F%2Fteams%2Edomain%2Enet%2Fit%2Fdelivery%2Fsharepoint%2F_vti_bin%2Fwopi%2Eashx%2Ffiles%2F77c3f2a890f14eec90dc8abf9a30995e&wdSmallView=1&wdEnableRoaming=1 might be temporarily down or it may have moved permanently to a new web address.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? No 

Did this work before? Yes 55

Does this work in other browsers? Yes

Chrome version: 60.0.3112.101  Channel: stable
OS Version: 6.1 (Windows 7, Windows Server 2008 R2)
Flash Version: 

I have removed all elements of our current environment that could be impacting it. However it still happens across multiple people through our organization and others in the industry.
 

Deleted: Broken Preview.pdf 38.7 KB

Broken Preview.pdf 38.7 KB Download

Deleted: Working Preview.pdf 57.5 KB

Working Preview.pdf 57.5 KB Download