Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Julian
I only found 1 article and it refers to MS Visual C++.
http://support.microsoft.com/kb/238610
I would start with a repair of Office first:
http://office.microsoft.com/en-us/excel-help/repair-or-remove-office-2010-HA010357402.aspx
If that does not fix the issue, try repairing or re-installing MS Visual C++ Red.
2010 64b: http://www.microsoft.com/en-us/download/details.aspx?id=14632
2008 64b: http://www.microsoft.com/en-us/download/details.aspx?id=15336
Hope that helps
Thanks...