After installing Windows Updates I started getting msvcr80.dll is missing error when tried to launch Microsoft Outlook. I tried to remove the last system updates but the msvcr80.dll is missing error remained. I would try to reinstall the whole Microsoft Office, but unfortunately I lost the CD with the CD Key, so I started to look for other solutions and briefly found one. There is no need to delete previous updates or reinstall anything.
Sometimes happens that dll libraries become corrupted or damaged and errors such as msvcr80.dll is missing are starting to appear. It happens because dll libraries are being constantly used by multiple programs at the same time. Back to the topic, if you want to fix msvcr80.dll is missing error in product of Microsoft Office all you have to do is just download and install this library from here: http://fix4dll.com/msvcr80_dll.
Follow the installation instruction provided on the downloading page and this should fix msvcr80.dll is missing error in Outlook, Word, Excel or any Microsoft Office product.