Can't open Calendar/Preview/App Store in OSX Yosemite

So this weird thing happens that none of my system apps could be opened...
I tried to restore my system but when I hit that cmd + R it appears a lock icon and it seems to require a passcode, I tried my login passcode but it comes with no response...didn't really know how to fix it and its getting on my nerves
Anything would help. Thanks!

First attempt a clean install...
http://mashable.com/2013/10/23/clean-install-os-x-mavericks/
If this doesn't work, which it didn't in my case, then download
Pacifist.
http://www.charlessoft.com/
You will need a copy of the Maverick installer.
Use Pacificst to " Open Apple Intallers"
The go to Contents of Mavericks->Contents of EssentialSystemSoftware->Contents of Essentials.pkg->Applications
Then Click on the programs that don't seem to be working and insall. This helped me update certain applications that weren't working such as App Store, Font Book, Mail, and any others.

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Can't Open iBookm Preview, App Store and other apps after upgrading to mavericks. PELASE HELP!

Well,
I Can't open several apps, as for example, iBooks, Preview, or App Store!
I can't read pdf's or open books, cant's see images or anything that uses preview app.
Can't go to App Store to look for any available update.
Please help!

First attempt a clean install...
http://mashable.com/2013/10/23/clean-install-os-x-mavericks/
If this doesn't work, which it didn't in my case, then download
Pacifist.
http://www.charlessoft.com/
You will need a copy of the Maverick installer.
Use Pacificst to " Open Apple Intallers"
The go to Contents of Mavericks->Contents of EssentialSystemSoftware->Contents of Essentials.pkg->Applications
Then Click on the programs that don't seem to be working and insall. This helped me update certain applications that weren't working such as App Store, Font Book, Mail, and any others.

I can not open the mac app store from my macbook pro, I can not open the mac app store from my macbook pro, I can not open the mac app store from my macbook pro

Help...
I can not open the mac app store in any way from my mac book pro
please help

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Click the Clear Display icon in the toolbar. Then try the action that you're having trouble with again. Select any messages that appear in the Console window. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V).
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.

I can't open the application App Store on my iMac. How can I fix this?

Here is the error message I keep getting.
You can't open the application App Store because it may be damaged or incomplete.

Simone ...
You can reinstall the App Store by downloading and installing the Mac OS X 10.6.8 Update Combo
It's ok to do this even though you are already running v10.6.8
Restart your Mac after the combo is installed, then try the App Store.

My app store will not open. when i try to open it i get an error that reads "You can't open the application App Store because it may be damaged or incomplete". How can I fix this?

my app store will not open. when i try to open it i get an error that reads "You can't open the application App Store because it may be damaged or incomplete". How can I fix this?

I am having the exact same problem. MacForums has been helping me, and I called Apple. After trying everyone's suggestions, and Apple's, no success.
My App Store app still says "incomplete or damaged." There is even a circle with a line through it on the icon. Apple said reinstall my Snow Leopard upgrade disc (not my original Leopard disc) and then run the Combo Update (like your suggestion). Did not work. I also updated the software from "Software Update". Rebooted.
I think this started after I replaced my hard drive with a SSD and moved the hard drive to where the DVD was. I wonder if the person above who had the same problem also installed a SSD?
Anyway, anymore ideas? Even Apple is stumped.
(In answer to the other post above, my Quicktime works fine.)
Message was edited by: mrivmriv
Just did some more reading. I was going by the icon in the dock. When I checked in Finder, there it was, fixed and brand new!! Thanks, anyway.
Message was edited by: mrivmriv

"You can't open the application App Store because it might be damaged or incomplete." Help?

I'm not exactly sure what happened but for some reason my App Store won't open anymore. Every time I try the message "You can't open the application App Store because it might be damaged or broken" pops up. And for some reason iPhoto is completely missing from my Macbook today as well. How do I get these two back and in working condition again??

I'm going by your profile v10.6.8
Installing the Mac OS X 10.6.8 Update Combo will reinstall the App Store for you.
Restart your Mac after the combo is installed.
It's ok to do this even though you are already running v10.6.8
If necessary, you can re download iPhoto.
Downloading past purchases from the App Store, iBookstore, and iTunes Store
message edited by cs

Went to open the folder 'app store' and got this: "You can't open the application App Store because it may be damaged or incomplete." How do I fix it?

Went to open the folder 'app store' and got this: "You can't open the application App Store because it may be damaged or incomplete." How do I fix it???

Are you running Snow Leopard or Lion? Download and install the correct combo for your OS.
Mac OS X v10.6.8 Update Combo v1.1
http://support.apple.com/kb/DL1399
Mac OS X Lion 10.7.2 Update Combo
http://support.apple.com/kb/DL1459

Error "You can't open the application App Store.app be cause it may be damaged or incomplete"

Using OSx 10.6.8 When I try to open app store it gives error "You can't open the application App Store.app be cause it may be damaged or incomplete" Does anyone know a way to re-install App Store.app ?? Thx

Have you tried opening them directly from the Applications folder, rather than the Dock?

Can't open mail and app store. I've tried to reinstall Maveriks using recovery but I get a message that I can install using my apple ID. Any help??

Can't open mail and app store. I've tried to reinstall Maveriks using recovery but I get a message that I can install using my apple ID. Any help??

Disable your antivirus and firewall, and try again.

HT203421 You can't open the application "App Store" because it is not supported on this type of Mac.

Please see images bellow.
I've tried to reinstall OS X 10.9.1 update through apple website to try resolve this...but haven't had any success.
Any ideas?
Both the App Store and Preview icons in doc still remain unusable.
I can't complete any software updates....

Welcome to Apple Support Communities
OS X Mavericks is damaged in your MacBook. Hold Command and R keys while your Mac is starting up to start up into OS X Recovery, and reinstall Mavericks.

You can't open the application App Store because it may be damaged or incomplete.

Can anyone assist me? i have this message on both my App Store Icon in the Task bar and on my Address Book? it wasnt there yesterday and appeared this morning when i started up my I Mac OSX 10.7.5
i will not allow me to open or access either
they are grayed out with a white cricle with a line inside it (like a no entry sign)
any assistance would be welcomed
j mort

Have you tried opening them directly from the Applications folder, rather than the Dock?

Can't open iTunes or App Store on my ipad2

iTunes when finally opens it shows only pics and txts, as if I lost the configuration some how... The same happens if I open facebook using safari...
My app store won't even open...
Please help me!!!
I'm totally new to apple products.
Right now I'm trying to download the new version of the iTunes on my pc and hoping that syncing will do it... I don't know...
HELP HELP HELP!!!!!!

It's hard to know what you're seeing, so please take a screen shot of what you see when you open iTunes. To take a screen shot, with the page you are referring to, touch the home and power button at the same time for a moment and you'll hear a shutter sound like a camera. The screen shot will be stored in your Photos Album, which you can either sync back to your computer, or email to your computer, so you can use the camera icon in your post to attach it. You should know that iTunes on your iPad, will not look like iTunes on your computer. On iPad, it is a store, plain and simple. You can't access your iTunes libraries (music, videos, books, etc). You can just purchase from the app.
You said your App Store won't open on your iPad. Are you connected to the internet when trying to open it? It does require intenet connection.
For Facebook, using it in Safari is not a good solution. Go to the App Store and download either the Facebook app directly or one of the 3rd party facebook apps available. The actual app is not optimized to fill the entire screen, but Facebook has announced they will have an iPad version out any day now.
I'm sure we can help you here. Take a deep breath and know there are a lot of us users here who enjoy helping people out.

HT2534 Can't open a Mac App Store account without credit card (which I don't have), what to do?

I tried opening a new account in the App Store since I got this new 5s and apparently can't open an account without credit card
What to do? Need help immediately

You'll need to open an account in the iTunes Store via the instructions in the article from which you came, getting a free iOS app. You then should be able to get free apps from the Mac App Store. Note that the instructions apply only when creating a new Apple ID. You cannot use an existing ID without providing a payment method.
Regards.

How do I get an App back on my home screen that I can still open in the App Store?

I deleted an app from my home screen as I wasn't using it. I decided I wanted to use it again so went into the App Store Purchased section. The app has Open next to it, and it does open that way, but I'm unable to get the icon back on my home screen. We've looked online and attempted to answer it that way but haven't seen the specific issue I'm having (so the suggestion regarding the cloud doesn't work).

Go to settings> general> usage> if the app is listed there delete and reinstall it.

Can't open jpg, preview.app does nothing

Hi,
I am attempting to troubleshoot a minimac 10.4.10
I cannot open .jpg with preview.app (or tiff/gif ect.), which i assume is the default pic viewer.
when d-clicking on a jpg (whether downloaded or uploaded from a camera) the picture will not open.
the only thing it does is the very brief animation quick flash from icon to full screen like it will open except it doesn't.
i opened the task manager (or whatever its called in apple) and preview.app is not running.
it is only possible to view a pic with firefox, quicktime, or safari.
HELP! i have basic to moderate user knowledge of mac

thanks for the responses!
i did a 'get info' on a pic and it does show the preview correctly (no thumnails anywhere is another problems as well)
it already has preview.app listed as the default app. i selected a different program and did a open with, and then switched the default back to preview.app and same problem.
*preview.app will not open period*. launching it by itself does nothing. i went to the applications folder and tried launching it from there and nothing. *It is still installed*. I did a 'get info' on it and it shows March 07 as the last time its been launched (approximate time of update to 10.4.10)
so i'm confident the problem is from the app not from the jpg files. It just won't launch.
is there anyway to reinstall it or something? uninstall/reinstall? dunno how to do this...

Can't open Calendar/Preview/App Store in OSX Yosemite

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