Update button transforms into Open after 2 secs

Apple has had an issue earlier with the iTunes Store and various aspects of it's operation. It's mentioned here:

http://www.apple.com/support/systemstatus/

It may take awhile for it to totally clear though.

In the meantime, try the following: Shut down the App Store/ iTunes Store apps from the Multitasking bar:

1.From the Home screen, double-tap the Home button, find the iTunes Store/App Store apps (drag the icons left/right) and swipe up on their respective screen captures, NOT on the icons at the bottom. This will close them.

2. Wait about one minute for the apps to close off

3. Reset the device:

Device Reset (won't affect settings/data/music/apps/etc)

1. Press and hold (& continue to hold) BOTH the Sleep/Wake button & the Home button.

2. Continue to hold BOTH (ignoring any other messages that may show) until you see the Apple logo on the screen.

3. Release BOTH buttons when you see the Apple logo and allow the device to boot normally.

After the reset, try again to update the apps.

II have the same issue. It started today out of the blue. The only change to my device was the download of the Periscope app. I don't know if that could be related but once I got it all of my app updates turned from Uldate to Open without anything actually downloading, and the App Store app still says I have 10 updates availaable.

We have 2 iPhones 6 at home and this problem happened on both devices at one day of interval. This is definitively a bug. Becoming huge even ! I'm in 8.2 version for iOS. Problem exists since October 2014 I saw!

FWIW, I'm having the issue too so I can actually troubleshoot as well...

Well, my next troubleshooting procedure did nothing to help the issue. I signed out of the App Store, shut down the App Store app from mutitasking, wait about one minute, then reset the device. After the reset, I signed back in to the App Store but all of my 14 apps that needed updating (testing on my iPad mini 2) all have the OPEN button and no UPDATE button. Tapping the OPEN button only opens the currently installed version of the app. No update takes place. Even if you search for the app in the App Store and try to update from the search results (and not the updates list), there is no UPDATE button and only the OPEN button.

I have three devices here (iPhone 5s, iPad mini 2, iPad Air 2) and they are all exhibiting the exact same behavior as described above when it comes to updating apps. Due to this, I can safely say that the issue is on Apple's end and there's likely nothing more that can be done about it until Apple corrects it.

started having the same issues on my iphone 5 last night. updated to the latest io8 version

Interestingly enough my ipad 2, which is also on latest version of io8, is not having this issue

I tried signing out of app store and reset device but still having the issue.

UPDATE:

just recieved 8 app updates on my phone and everything seems to be working normally again. must have been apple server issue