https://forums.autodesk.com/t5/autocad-forum/autocad-lt-2012-many-users-with-one-project-folder/m-p/5827434#M310902 <DIV style="font-size: 12px; font-style: italic; color: blue; margin-left: 25px; margin-bottom: 25px; padding: 3px; border: 1px dotted black; font-family: verdana;">hwalker wrote:<BR /> <P><BR />When a drawing is opened it creates 2 files with the extensions .dwl and .dwl2. These tell Autocad that the drawing is open somewhere else.</P> </DIV> <P>That part is true, but those files have NOTHING to do with file locking. <A style="text-decoration: underline;" href="http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/File-locking-no-longer-controlled-by-software.html" target="_blank">The O/S controls file locking and has since 1997</A>. Those two files are simply used by AutoCAD and the WHOHAS command. You can delete them, replace them, rename them, etc. at any time with no ill effects.</P> <P>&nbsp;</P> <P>&nbsp;</P> <P>OP, talk to your IT people. This is an O/S issue and nothing to do with your local copy of AutoCAD.</P> Tue, 22 Sep 2015 12:36:18 GMT rkmcswain 2015-09-22T12:36:18Z