There is now a KB article for this issue:
As a workaround, Try to set a date older than the 5 of May 2015 on the client web you launch the browser. It seems to be an issue related to flash player
Rolling back adobe flash to v11.2.202.235 will allow the access. This should only be a temporary solution until a fix is made available as it leaves your computer susceptible to the vulnerabilities associated with that version.
We have an open ticket with VMware on this and they are looking into it but no solution yet.
We just started experiencing the same problem, and doing the date trick back to the 4th fixes the issue (though its not a real solution). Has anyone seen an update schedule for flash to fix?
Here's a cause/fix from the Adobe forums, though I don't know how we would implement it:
There is now a KB article for this issue: