Google Chrome has removed support for the showModalDialog API with Chrome 37 and above. Microsoft Dynamics CRM will require an update to continue using Google Chrome. More information on the deprecation of this API can be found here:Disabling showModalDialog
There is a workaround available to continue using this API, which expires at the end of April 2015. This information is also documented in the link above. Once this API and workaround have been fully deprecated, Microsoft Dynamics CRM will require an update for users to continue using Google Chrome.
The release of these updates is scheduled for April 2015.
We're using UR18 (build 4374) on client/server and still having problems with Chrome with CRM 2011. Are you sure that UR18 fixes this problem? We have ribbons that don't show active, we can't export to Excel, and sometimes changes made in a window don't take - all problems i think are described as being due to the deprecation of showmodaldialog. So what is the solution since UR18 doesn't seem to fix it?