Make sure that Lightroom is closed down, then use Windows Explorer to browse to the folder that contains the "Lightroom 5 Catalog.lrcat" file, and see if there is another file alongside it called "Lightroom 5 Catalog.lrcat.lock". If this 'lock' file is there, and you are sure that Lightroom is...
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.