https://www.infopathdev.com:443/forums/41.aspxIf you're not sure where to ask your question, ask it here. If necessary, our moderators will make sure it gets classified in the correct board.enCommunityServer 2007 SP3 (Build: 31118.962)https://www.infopathdev.com:443/forums/thread/85081.aspxWed, 05 Dec 2012 15:35:24 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:85081Jimmy0https://www.infopathdev.com:443/forums/thread/85081.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=85081A bit of a long shot if file-open didn&#39;t work, but have you tried right-clicking the file and selecting Design.https://www.infopathdev.com:443/forums/thread/85077.aspxWed, 05 Dec 2012 13:39:48 GMT033a2e2d-04e2-4a9d-be01-a4634161eefd:85077JoelW0https://www.infopathdev.com:443/forums/thread/85077.aspxhttps://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=41&PostID=85077I have a form that has an expired certificate I need to update.&nbsp; I&#39;ve done this on all of our forms before but on this particular one I cannot open the file in design mode.&nbsp; When I try to I get the same message as if I tried to double click it to open: &quot;The form cannot be opened because either the signature is corrupt, or the certificate used to sign the form has expired or been revoked. To fix this problem, contact the form designer.&quot; I have tried opening InfoPath 2010 Designer and doing a file open but that does the same thing.&nbsp; Is there any way to get this to open so I can add the new cert?&nbsp; <br />