As of 12th May edit and continue has stopped working for 64 bit apps in my visual studio set-up, any attempt to change the code produces:
"changes to 64-bit application are not allowed"
This also stops and 'Edit and Stop' type changes.
This is true for all projects, many of which I have been successfully 'edit and continuing' for some months.
It is reproducible on a freshly-created blank console project with 'factory settings' and then 'prefer 32-bit' unchecked.
I have tried a VS2013 repair and disabling all extensions.
Also my Windows Update log shows no changes around this date.
I am at a loss as to what to try next!