If receiving an error for extend.dat when starting Microsoft Outlook. This file caches the registry files for Outlook for 3rd party applications such as extra buttons in Outlook and so on. If you rename this file (extend.OLD) it will force Outlook to search the registry for Outlook entries and...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.