I seem to get errors like this in iTunes on a daily basis - usually when I'm updating apps. Today it was 11503, but I've had several other error numbers on previous days that I haven't been able to find any information about.
If I click ok, and then repeat my request (eg. Update All Apps) it will then typically work fine.
Update: but not on this occasion. For the first time, this error is actually persistent… I just tried 5 times and keep getting the same error, which is unusual for me.
Same thing here. Updated a bunch of apps this morning, then when I tried to download a new one about 10 mins ago, been getting the error. The App Store on my MacBook, iPhone and iPad won't let me d/l anything.
Still getting this error too. Very annoying. It's also inconsistent, one app can give me this error on multiple tries and then it suddenly works the next time. Sometimes even a couple of apps in a row, until the error appears again. So I am definitely connected to Apple's server, it is just very unreliable.
Tried all the usual advices, nothing helps reliable: rebooting iTunes, logging out/in of iTunes Store, resetting iTunes Store cache (the last one works for a little while, sometimes).
started getting this error myself in the last 2 weeks. If I individually select the app or click update all apps it make no difference. sometime it works sometime I have to click update multiple times. Is there any new about this or is everyone still have the same issue. I tried logging out and back in also.