"Update" gone, "Open" instead.

I am having the same issue!

Seems to be a widespread issue and on Apple's end. I've done troubleshooting on 5 different devices and all have the issue. Contact Apple support:

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

Other topics with the same issue:

Apps will not update

iPhone 6, iOS 8.2, can't update or download apps

Appstore update Error.

Update button transforms into Open after 2 secs

Go to the actual app on your phone, tap it's icon and it should download the update. Do this with each update that you have until Apple fixes their end.

Maybe I don't understand what you're describing, but that doesn't work for me

Do you mean on the Home Screen? Tapping on the app simply runs it. No update takes place. You are simply running the app. It has never worked the way you are describing it. Tapping on the app from the Home Screen or within a folder runs the app, despite whether or not an update is available.

If you mean in the App Store, the result when searching for the app that needs updating brings you to it's description page where the button that should say UPDATE again says OPEN.

Right now, I do not have the issue (after updating an app on the Mac/iTunes, then syncing it to the device). But it worked maybe an hour ago for 1/2 hour, then went back to having the issue. I have no idea if this current fix will "stick" or if it will again be back to having issues after awhile.

Dominik Salek wrote:

Hi, I have a problem with app store on iPhone 6 and iPad 3.

When I switch to update tab to update my apps, all "Update" buttons are changing to "Open" so I can't update it. All those apps are not up to date so I am sure there are newer versions. It's a problem on both devices.

Then you probably have auto update switched on and the apps are already updated.

I'll try to clarify exactly what the issue is...

On one device, my iPhone 5s (I have 5 devices total), I have 13 apps on it that need updating. Going to the App Store on the device and tapping on the Updates tab, Those 13 apps are indeed in the updates list, however, the UPDATE button for each app instead says OPEN. The Update All button is dimmed out. When you tap on the OPEN button for these apps, the app runs as if it has already been updated, but in reality, you are simply running the older non-updated app that's already on the device. I have verified that they are the older versions under Settings/General/Usage/Storage/Manage Storage and noting the version number.

That would most likely be because (as I said before) the apps have been updated already, because you have Automatic install switched on for updates in Settings>iTunes & App Store>Automatic Downloads

It is not because the apps are already updated. I do not have auto update on. This is not a user issue this is an apple issue

Last evening when I found that the apps listed for updates on both my iPhone 6+ and my iPad Air 2 would not update, but just said open, even thought they were listed in the update area, I went to the individual apps on the Home Screen, tapped them once and they downloaded the update.

Your milage may very.

No, I understood what you meant about Automatic Downloads being enabled on the first read-through, however, it is NOT enabled on any of my devices. I have always updated manually.

Right now, I'm not having the issue as it either seems to have resolved itself or my manually updating one of these apps in iTunes and syncing it to the devices has knocked some sense into whatever the problem is. I'm merely trying to clarify the issue since others still seem to be having it.

It is back to working as it should for me now

It's peculiar how this happened suddenly and not after an update...

I also had this problem as described by others here, on both my iPhone and iPad. The phone is configured to auto install updates, the iPad is not.

I think it was an issue on Apple's end and there are a number of threads where folks are describing the same issue. It appears to be fixed as updates are now happening as expected on both my devices.

I had the same issue: had 7 apps needing updates. Suddenly I had 12 and the "Update all" was available and all 12 updated.

If Apple had an it was solved or it just went away.