From: https://forum.parallels.com/threads/frequent-excel-2013-crashes-under-win-7-in-parallels-are-getting-unbearable.289599/

Also: https://support.microsoft.com/en-us/kb/2768648

Check the box:
File -> Options -> Advanced -> Display Section -> Disable hardware graphics acceleration

Fixed by upgrading to newer version

From: office.com/setup

enter new product key

From: http://answers.microsoft.com/en-us/office/forum/office_2016-office_install/is-there-a-way-i-change-the-product-key-for-office/331f0e68-89dc-4885-8095-6fe733d61ba6

From: http://blogs.goucher.edu/training/2011/03/15/convert-email-addresses-in-excel-to-outlook-email-list/

Copy and paste the column of email addresses into a blank Microsoft Word document.
A small clipboard appears to the right of the data. Click on this once and select Keep 
Text Only.
Click the REPLACE button on the Home tab (sometimes found under Edit > Replace).
Click inside the “Find” box and enter ^p. (Hint: The carat symbol “^” is typed using 
Shift-6.)
Click inside the “Replace” box and type in a semi-colon. (Hint: The semi-colon key on most 
keyboards is to the immediate right of the letter L.)
Click the REPLACE ALL button. When the process is finished, hit OK and close the 
Find/Replace window.

From: http://www.nirsoft.net/utils/product_cd_key_viewer.html

ProduKey is a small utility that displays the ProductID and the CD-Key of Microsoft Office (Microsoft 
Office 2003, Microsoft Office 2007), Windows (Including Windows 7 and Windows Vista), Exchange Server, 
and SQL Server installed on your computer.

From: http://office.microsoft.com/en-us/outlook-help/learn-where-menu-and-toolbar-commands-are-in-office-2010-HA101794130.aspx

  Use an interactive guide to find my commands
  These interactive guides show you where your favorite menu and toolbar commands are located in 
  Office 2010. Just click the command or button that you want to find and the guide will show you 
  its location in the 2010 version of the program.
  

From: http://office.microsoft.com/en-us/templates/results.aspx?qu=2010%20Menu%20to%20ribbon%20reference%20workbook&ex=1&CTT=5&origin=HA101794130

  Get a printable list of Office 2010 commands and buttons
  If you would like to have a comprehensive list of all menu and toolbar commands and their new 
  locations, download and open the menu-to-ribbon reference workbook for your product. All of 
  these open as Microsoft Excel workbooks, so you'll need to have a version of Excel on your 
  computer to use them.

From: https://www.microsofthup.com/hupus/phonesupport.aspx?culture=en-US

877-248-1220 8a-1a M-F; 12p-8p EST

http://technet.microsoft.com/en-us/library/ee819096(v=office.15).aspx

Support for running Office 2013 side-by-side with existing Office installations

Click-to-Run is a Microsoft streaming and virtualization technology that reduces the time that is required to install Office. It also provides an isolated environment that allows users to run the latest version of Office side-by-side with an earlier version of Office on the same computer. When installed by using Click-to-Run, Office products can still run macros and interact with the other Office solutions that are installed on the computer. The Office Telemetry features also work with Office products that are installed by using Click-to-Run.

Click-to-Run plays an important role in the modern Office compatibility process by allowing users to pilot Office products without giving up their current environment. This safety net helps keep users productive while reducing their fear of change. Any time that a document or solution doesn't work correctly in an Office product, the user can open that file in the earlier version of Office and continue to work.

You can learn more about how to install Office products by using Click-to-Run in Click-to-Run overview. See Phase 3: Validate that Office files work to learn more about how Click-to-Run is used during the Validate phase in the modern Office compatibility process.