iPhone app could not be installed at this time

Question

i was trying to install my iphone application from testflight. it installs perfectly on few devices but in some after installing about 80 percent it gives an error \"Unable to d

Answer 1

I had the same problem as @mohitum007. In my case the developer of this App included an expiry date in it.

As workaround I set the date backwards to a past date (e.g. last month). Then I could install it and use it.

Also when I set the date back to normal, the already installed App didn't start up anymore. I contacted the company of this App to send me an updated version.

Sidenote: I found out that users from other Apps had the same problem but reversed: it won't install or start before a certain date.