I can't sign into the Mac App Store any more. Can anyone help?

When I click on Sign In nothing happens. App Stores on my other devices are working fine.
This is the first time I've used the discussion forums so I hope I am going about this in the right way.

Welcome to the Apple Support Communities, JohnPaul2!
Try restarting the App Store. Just quit it and open it back up again and try it again. Then try purchasing a free app and sign in there.
Of course, you can also try the well-known "restart your computer" trick. Worked for me a month ago when this happened to me.

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Can't log into the mac app store

Hi,
I put my username and password in then after about 5 secs get a message saying your device or computer could not be verified!!!
HELP !!!!!!!!!!!!!

I have the same problem on my second computer. Log into Mac App Store with my apple ID working on my first computer, but when I want log on my second computer I got message : your device or computer could not be verified!
how can I verify my second computer???

I can't log into the Mac App Store.

I can't log in.
iTunes, check.
Apple online, check.
Apple ID, check.
It's just the Mac Store. When I try to open an app I purchsed on this computer with this ID it responds with 'unknown error'
I have no libraries to delete, I've repaired disk permissions.
This is frustrating because it happens very frequently
I'm runing Lion. Is it Lion? ***?

Back up all data. Don't continue unless you're sure you can restore from a backup, even if you're unable to log in.
This procedure will unlock all your user files (not system files) and reset their ownership and access-control lists to the default. If you've set special values for those attributes on any of your files, they will be reverted. In that case, either stop here, or be prepared to recreate the settings if necessary. Do so only after verifying that those settings didn't cause the problem. If none of this is meaningful to you, you don't need to worry about it.
Step 1
If you have more than one user account, and the one in question is not an administrator account, then temporarily promote it to administrator status in the Users & Groups preference pane. To do that, unlock the preference pane using the credentials of an administrator, check the box marked Allow user to administer this computer, then reboot. You can demote the problem account back to standard status when this step has been completed.
Triple-click the following line on this page to select it. Copy the selected text to the Clipboard (command-C):
{ sudo chflags -R nouchg,nouappnd ~ $TMPDIR.. ; sudo chown -R $UID:staff ~ $_ ; sudo chmod -R u+rwX ~ $_ ; chmod -R -N ~ $_ ; } 2> /dev/null
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). You'll be prompted for your login password. Nothing will be displayed when you type it. You may get a one-time warning to be careful. If you don’t have a login password, you’ll need to set one before you can run the command. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The command will take a noticeable amount of time to run. Wait for a new line ending in a dollar sign (“$”) to appear, then quit Terminal.
Step 2 (optional)
Take this step only if you have trouble with Step 1 or if it doesn't solve the problem.
Boot into Recovery. When the OS X Utilities screen appears, select
Utilities ▹ Terminal
from the menu bar. A Terminal window will open.
In the Terminal window, type this:
res
Press the tab key. The partial command you typed will automatically be completed to this:
resetpassword
Press return. A Reset Password window will open. You’re not going to reset a password.
Select your boot volume ("Macintosh HD," unless you gave it a different name) if not already selected.
Select your username from the menu labeled Select the user account if not already selected.
Under Reset Home Directory Permissions and ACLs, click the Reset button.
Select
 ▹ Restart
from the menu bar.

Can't log into the Mac App Store in 10.6.6 Update

While the app store loads, the sign in screen opens behind the app store application. When i go there to enter my apple ID, etc., it won't let me enter anything. Why is this?

If you have FruitMenu installed, here is a workaround: First, put your Apple ID into the clipboard (by typing it into any text field and using the Copy command). Second, in the "Enter password" window, triple-click on the Apple ID field, which should open a menu that allows you to Paste in your Apple ID from the clipboard. Now, put your Password into the clipboard, triple-click on the Password field and Paste your Password into the field. You should then be able to Sign In.

Problems signing into the Mac App Store?

The App Store shows I have 2 updates to software that I recently purchased (Final Cut Pro and Motion). When I click on the updates I am prompted to sign in... when I enter my login information I keep getting the error message - "There was an error in the App Store. Please try again later. (13)"
Any suggestions?

If you have FruitMenu installed, here is a workaround: First, put your Apple ID into the clipboard (by typing it into any text field and using the Copy command). Second, in the "Enter password" window, triple-click on the Apple ID field, which should open a menu that allows you to Paste in your Apple ID from the clipboard. Now, put your Password into the clipboard, triple-click on the Password field and Paste your Password into the field. You should then be able to Sign In.

HT1338 I can not connect to the mac app store. How can I connect? I'm connected to the internet.

Every since I've upgraded from snow leopard to mountain lion. I've have had problems. Let me list all that I've done:
1.I've reinstalled the mountain lion operating system.
2' Replaced my hard drive.
3. Clean installed and migrated my files
4. Now I can't connect to the app store for updates, nor do I have a headphone connection.
5. I've call apple care many , many times. They appear to be stumped,. I'm waiting on a response.

The headphone is another side issue. It's not related. Since reinstalling, I lost the ability to connect to my extended speakers through the headphone outliet.

Can't sign in to Mac app store with known-good ID

I can't sign into the Mac app store from my mini. Everything else works fine (iTunes store, icloud.com) and I can log in to the Mac app store (and everything else too) on my Air. So, it's just the Mac app store and just from my Mac mini.
I rebooted. I deleted the "storeagent" preferences file. I reset the password (to the same one). Still won't work. It just says "unknown error."

just the Mac app store and just from my Mac mini.
Try deleting the cache associated with the App Store.
Open a Finder window. From the menu bar click Go > Go to Folder
Type of copy paste the following:
~/Library/Caches/com.apple.appstore/Cache.db
Click Go then move the Cache.db file to the Trash.
Restart your Mac then try the App Store.

Why can I not access the Mac App store?

why can I not access the Mac App store? I cannot enter the Mac App Store; for updates to featured Apps?

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 by pressing the key combination 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.

Why can't I access the Mac App Store anymore?

I want to upgrade my Mac Pro but I can no longer access the Mac App Store and don't know why.

Remember that Rosetta is not supported beyond 10.6.8. This means that if you use any PowerPC Apps, they will refuse to work.
My top six are:
Microsoft Office, including Word, 2004 or older
Photoshop CS2 or older
Apple Works 6
FileMaker Pro 6
Eudora 6
Quicken 2007 (unless you purchase and install the "Loin Compatible" update)

I have a MacBook with OS X 10.5.8 and I purchased a Mtn Lion OS up grade and it keeps telling me to install via the Mac App Store, but I can't get the Mac App Store installed on the MacBook it wants at least 10.6.6 so I seem to be stuck . Help

I have a MacBook with OS X 10.5.8 and I purchased a Mtn Lion OS up grade and it keeps telling me to install via the Mac App Store, but I can't get the Mac App Store installed on the MacBook it wants at least 10.6.6 so I seem to be stuck . Help

ChuckPhilyaw wrote:
I have a MacBook with OS X 10.5.8 ...
The first step in Upgrading... is to Snow Leopard = OS X 10.6.x
It is Not available as a download... It is a Paid Upgrade.
Do this first...
Check that your Mac meets the System Requirements for Snow Leopard...
Snow Leopard Tech Specs > http://support.apple.com/kb/SP575
If so... Purchase a Snow Leopard Install Disc...
http://store.apple.com/us/product/MC573Z/A/mac-os-x-106-snow-leopard
After the Successful Install, run Software Update to get the latest updates for Snow Leopard and iTunes.
Be sure to make a Backup of your Current System Before Upgrading...

Why can I not have the MAC app store application with my software update?

Why can I not have the MAC app store application with my software update?

You need to be running v10.6 Snow Leopard.
http://www.apple.com/mac/app-store/
You can upgrade to Snow Leopard for $29.00 if your Mac meets the minimum requirements.
http://www.apple.com/macosx/specs.html
http://store.apple.com/us/product/MC573Z/A?mco=MTY3ODQ5OTY

How can I login to the Mac App Store?

My wife cannot login to the Mac App Store on her MacBook Pro. This first happened under Snow Leopard and is now happening under Lion. I have googled extensively for a solution, but not yet found one that lasts long term. We have binned a Networkinterfaces.plist a few times and this has given us temporary access to the App Store, but now it's lost it again and we can't even find the plist to bin it!
The error message we get when trying to login to the Mac App Store is, "your device or computer could not be verified".
Any help will be much appreciated.

Thanks for that suggestion. I'll remember it for next time. We seem to have got temporary reprieve, which we think might be due to resolving a conflict between iCal and MobileMe.

Can't download from the Mac app store

Hi,
I was wondering if anyone else is having this issue. Anytime I try to download an app free or paid from the mac app store it goes to my doc but it doesn't download it just sits there and says it's waiting. also when I have an update for an app I click on it and enter my apple id and pass to update and nothing happends. the store worked when I first got it and then one day it just stopped.
how can I fix this? Do i have to reinstall the app store? I am running the latest version of snow leopard on a core i7 macbook Pro (early 2010) I also checked my firewall settings and nothing is blocking it from working.
Thanks

Then I would first try trashing these files and folder;
~/Library/Preferences/com.apple.appstore.plist
~/Library/Preferences/com.apple.storeagent.plist
~/Library/Preferences/ByHost

How can I get into the Dutch App store?

I am a Dutch Native living in the U.S. and since a few weeks the proud owner of an Ipad 2. I would like to download some Dutch apps for me and my son but I do not know how to get into the Dutch App store or how to find Dutch apps in the U.S. app store.

http://store.apple.com/nl
All the Apple online stores are just store.apple.com/(country-domain_suffix)
Not sure about payment policies and such (that is, if you need a Netherlands credit card with a Netherlands billing address, or whether you can use a US credit card).

I can't sign into the Mac App Store any more. Can anyone help?

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