Have few users with Outlook 2007 sharing calendar using live id. Just today getting message information you exchange with this site cannote be viewed or changed by others. However, there is problem with the site's security certificate. The security certificate is from a trusted certifying authority The security certificate has expired or is not yet valid The security ceriticate has a valid name matching the name of the page you ar trying to view. Do you want to proceed? Yes No View certificate Our email is hoisted with ISP. Don't know what to do to stop this message from poping up. Thanks Chandra

If it's just started happening today then there's a good chance the certificate has expired. You can see the certificate yourself. Check it out. If it has expired call up the provider and tell them. If not, come back here and we'll take it further. "Chandrakhemani" wrote in message news:da889454-5279-4c83-8e31-411d33dae621... Have few users with Outlook 2007 sharing calendar using live id. Just today getting message information you exchange with this site cannote be viewed or changed by others. However, there is problem with the site's security certificate. The security certificate is from a trusted certifying authority The security certificate has expired or is not yet valid The security ceriticate has a valid name matching the name of the page you ar trying to view. Do you want to proceed? Yes No View certificate Our email is hoisted with ISP. Don't know what to do to stop this message from poping up. Thanks Chandra Mark Arnold, Exchange MVP.