MSVCR80.dll error upon starting Outlook

Upon starting Outlook I receive the following error;

“This application has failed to start because MSVCR80.dll was not found.
Re-installing the application may fix this problem.”

I reinstalled Outlook but that did not solve it. How can I recover?

The source of the issue is that an add-in that you installed modified or created its own outlook.exe.manifest file in the Outlook installation directory.

Delete the manifest-file
To recover, locate and delete the “outlook.exe.manifest” file in the installation directory of your version of Outlook. By default, for Outlook 2007 this would be;
C:\Program Files\Microsoft Office\Office12

and on a 64-bit version of Windows this would be;
C:\Program Files (x86)\Microsoft Office\Office12

Repair Office
After you have deleted the file, run a repair on your Office installation or start Office Diagnostics via;
Start-> All Programs-> Microsoft Office-> Microsoft Office Tools-> Microsoft Office Diagnostics

Check your add-ins
If the issue returns after you restart Outlook, some add-in keeps changing this file back. To locate this add-in, disable all your add-ins and enable them 1-by-1 to find the culprit. Once you have found the offending add-in, uninstall it or check with the vendor of the add-in if there is an update for it.

Note: Do not download MSVCR80.DLL from any of the many on-line DLL download repositories that are available on the Internet. You are likely getting an older or an infected version of it on your computer. If this file is indeed missing on your computer and required by an application, you can obtain a the original directly from Microsoft by downloading the Microsoft Visual C++ 2005 installer from Microsoft. You’ll find the 32-bit version here and 64-bit version here.