Hi,
In regarding of the issue, please provide us more information to assist you better.
- Did this issue only occur with the .xls files downloaded from Wells Fargo website? Have you tried from other website, such as OneDrive?
- Have you tried to download some .xlsx files to test from Wells Fargo website?
Please do some tests to narrow down the issue.
1) Try to convert the .xls files to .xlsx files, if we can open the .xlsx correctly, this issue may be caused by the compatibility issue between Office 2013 and Office 97-2003 format. Thus, I recommend you convert the file to Excel 2013
format.
2) Open the Excel program first=>Click Open=>Navigate to the file=>Then open it. If it also can be opened correctly, this issue may be caused by the Dynamic Data Exchange. Please try to turn off the "Ignore other applications that use
Dynamic Data Exchange (DDE) setting.
Steps:
1.Click the File tab, and then click Options.
2.Click Advanced, scroll down to the General section, and then clear the Ignore other applications that use Dynamic Data Exchange (DDE) check box in the General area.
3.Click OK.
If you have any update, please feel free let me know.
Regards,
George Zhao
TechNet Community Support