Error in the Mac app store

I'm trying to ugrade my Lion sistem to Mountain Lion in the Mac app store, but i'm not able to.
Apeears a message ""There was an error in the App Store. Please try again later. (13)"
Anyone knows a solution?

Make sure your Mac mini can upgrade to Mountan Lion. See Step 1 here > Apple - Upgrade your Mac to OS X Mountain Lion.e >
If you have anti virus software installed, disable that before downloading apps.
Turn off the Firewall in System Preferences > Security (or Security & Privacy) > Firewall
If that doesn't help, open the Finder. From the Finder menu bar click Go > Go to Folder
Type this exactly as you see it here:
~/Library/Caches/com.apple.appstore/Cache.db
Click Go
Move the Cache.db file to the Trash.
Now here:
~/Library/Preferences
Click Go
Move these files from the Preferences folder to the Trash.
com.apple.appstore.plist
com.apple.storeagent.pllist
Now here:
~/Library/Cookies
Click Go
Move the com.apple.appstore.plist file from the Cookies folder to the Trash.
Empty the Trash, try the App Store.

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I cannot to download from the mac app store (There was an error in the App Store. Please try again later. (20))

I cannot to download from the mac app store (There was an error in the App Store. Please try again later. (20))
I traied to remove cookies and still don't working.

Regretably, none of the above solutions has resolved this problem for me.
Whenever I try to perform updates (in my case, Xcode and iPhoto both want to update), I receive the following error:
An error occurred during purchase.
(of course, I am not trying to purchase anything, it is a free update)
If I press Retry, the above repeats until I press Cancel, then I see:
We could not complete your request.
There was an error in the App Store. Please try again later. (20)
I have been "trying again later" for three weeks now, with no resolution in sight.

Error message when I try to download new iTunes as follows iPhoto 7.1.5 is already installed and was not purchased from the Mac App Store

I am trying to download new version of iTunes from App store having purchased it on my laptop. When I try to download on my iMac I get the following message:
Error message when I try to download new iTunes as follows: iPhoto 7.1.5 is already installed and was not purchased from the Mac App Store - and then I am asked if I want to buy it again. I don't understand the error message and I don't want to purchase the new version again.
Also, since upgrading to Lion my videos (from Sanyo Xacti camera) do not play on iTunes. I can only open photos.
Thank you.

Make a back up of your Library. Now you can update without fear.
Regards
TD

Getting Error Message when trying to use Software Update in the Mac App Store...

Hello,
I was wondering if someone knows what this error message in the Mac App Store means. I am trying to run Software Update by clicking in the Apple Menu however, I am not able to see my available updates and instead get the following message on the Mac App Store:
I have tried to fix the error by deleting both the Mac App Store Caches and plist files in the user library and made sure that I am properly logged into the Mac App Store with my personal Apple ID.
What else can I do?

aayushp wrote:
I've been having the same issue. It was all fine until yesterday when I was searching for updates.
Since when have you been seeing this error message?
Last time I checked for an update was about 2 weeks ago and there were no errors reported. However, today I wanted to update iTunes to version 10.7 and decided to use the standalone installer rather than the SU version. Still, I decided to run the MAS Software Update function in order to ensure that my computer had all its software up-to-date and then I get this message. I don't think that me installing iTunes is to blame. Probably, it could be an internet connection problem on Apple's end I am still submitting a bug report to Apple.
Now one question, who is your ISP (internet service provider)? In my case I have Comcast and I am in Florida.
Thanks for your reply!

I tried to download an app on the mac app store and it continues to say: "There was an error in the App Store. Please try again later. (null)" Please help me. Thank you.

I tried to download an app on the mac app store and it continues to say: "There was an error in the App Store. Please try again later. (null)" Please help me. Thank you.

Change your Date & Time settings to reflect automatic. It will fix the problem.

Every time I try to log in to the Mac App Store, I get red words saying "An unknown error has occurred" How do I fix this?

Every time I try to log in to the Mac App Store, I get red words saying "An unknown error has occurred" How do I fix this?

Try deleting the cache associated wi the App Store.
Quit the App Store if it's open.
Now open the Finder. From the Finder menu bar click Go > Go to Folder
Type or copy/paste: ~/Library/Caches/com.apple.appstore
Click Go then move the Cache.db file from the com.apple.Safari folder to the Trash.
Try the App Store.

I can not download the newest itunes to my imac but it will not, keep getting error message. So wanted to update to lion but unable to locate the mac app store.

looking fro help to get new version of itunes downloaded on imac that is running snow leopard and trying to update to lion but cannot find the mac app store.

App Store is an application in Applications folder on your hard disk.
But what error do you get, when trying to update iTunes? That should be possible in Snow Leopard too!

Error 100 trying to download an App from the Mac App Store

Hi,
Every time I try to download an App from the Mac App Store I obtain a message that says that it has ocurred and error with the apple store (Error 100).
After that, i obtain a second message that says "Tour Apple ID has been deactivated".
I can not download any app to my new MacBook Air.
Thanks in advance.
Regards
Martín

I found that this error occurred when trying to purchase Aperture via the new App Store. I had previously downloaded the trial version via the old Apple store and having it and its installed folders on my hard disk prevented the App store from letting me purchase.
So, if you have a trial version, trash it, and trash the related folders in your user Library and also the Aperture project folder (wherever you saved it), typically in the Pictures folder.
Then try to purchase. Voila!

I Deleted the mac app store because of error 4 and i cant download it with software update

I Deleted the mac app store because it showed error 4 and I cant download it with software update.

I guess you have no time-machine or carbon copy cloner backup at hand.. then you will go a manual way.
Mac AppStore is included in 10.6.6 first and a updated better version ( the latest ) is in 10.6.7, so I focus on the later :
Use the shareware ( works without paying , nag screen only ) called "pacifist" . Locate the 10.6.7 update package on your harddisk, mount the dmg, go inside and right-click the installer package, it wil offer you top open it with pacifist instead of Apples OS installer.
Inside pacifist you can see the various sub-packages, one item is the Mac App Store, select it and choose "install to default location" from pacifists menu.
This way you bypass the OS' logic that it is already up to date and will find AppStore in your Applications folder.
Note that this scenario is totally unsupported by Apple of course and you do it on your own risk.
The official way if you have messed up the OS and have removed parts of it, would be to wipe and reload OSX plus its updates to be back..

Every time i try to sign in to the mac app store i get the message 'an unknown error has occurred"

I can sign into the iTunes store but not into the Mac App Store. I don't have this problem on my other Mac running the same Mac OS X 10.6.8.

Try deleting the cache associated wi the App Store.
Quit the App Store if it's open.
Now open the Finder. From the Finder menu bar click Go > Go to Folder
Type or copy/paste: ~/Library/Caches/com.apple.appstore
Click Go then move the Cache.db file from the com.apple.Safari folder to the Trash.
Try the App Store.

Error code "this code must be redeemed in the mac app store"?

I enter code for update in app store and get code "this code must be redeemed in the mac app store"?

The Apple Support Communities are an international user to user technical support forum. As a man from Mexico, Spanish is my native tongue. I do not speak English very well, however, I do write in English with the aid of the Mac OS X spelling and grammar checks. I also live in a culture perhaps very very different from your own. When offering advice in the ASC, my comments are not meant to be anything more than helpful and certainly not to be taken as insults.
Are you using the correct app store? If you are using the iTunes App Store, apps for iOS devices, then you need to switch to the Mac App Store, apps for Macs. The Mac App Store is the App Store app in your Mac's Applications folder. It can also be opened from the App Store selection in the Apple Menu. It also comes by default in the Dock.

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.

How can I delete a app from the Mac App Store completely?

I have a apllication which had a error. I delete it and download the app from the Mac App Store again, but the error wasn't delete. My iMac had stored it and the Error wasn't deleted so I can't youse the app.
What can I do to delete the app complete?
Please answer.

If your App was faulty in some way you should write to iTunes support. If you simply want to delete it, most Apps carry uninstall (not delete) instructions.
Incidentally, I believe you cannot delete the record of your purchase from iTunes. That will always stay on your purchases list and be marked with a dark grey square as INSTALL..

Why is the Mac App Store loading the wrong Apple ID when I try to redownload my copy of Lion?

Pretext:
I purchased my MacBook Pro 17" Back in March of 2011 from MicroCenter in Madison Heights, MI. Later I purchase OS X Lion 10.7 from the Mac App Store on July 23rd, 2011 under my Account along with a couple of other programs. I know it is under my account because, I have redownloaded the OS X Lion Installer twice before (10.7.1 and 10.7.2), making my own bootable copies on USB drives as emergency copies.
Now my Apple ID has never changed, the password is still the same as when I set it up back when I signed up for my iTunes Music Store account, the only thing changed is my payment options (reissued debit cards, and a bank switch). The account has always been mine alone, never part of any family account or anything of the sort. Outside of that, nothing has ever been editted on my accounts.
Last month my father decides to finally update from his 2002 Power Mac G4 (QuickSilver) to a new MacBook Pro a month ago. I show him how to make a bootable USB stick so he can always have an immediate backup installer. Both him and I are on AT&T which likes to cap bandwidth so remote installs are an insane proposition. He makes his own bootable USB stick of 10.7.3., and in an effort to save bandwidth I borrow it and make a duplicate.
Now I did boot from the copy of the USB stick, but never installed, I just wanted to make sure it loaded just in case. Anyway, I quit of out the installer return to my usual start up disk (OCZ Vertex 3 120GB) and continue on. Eventually I download the 10.7.3 update through the System Update. All is well and fine. Couple weeks later, I decide to make another fully bootable USB stick, go to redownload from the App Store (new AT&T billing cycle) and now it is asking me for my father’s Apple ID and Password. It refuses to take my Apple ID and password and tells me there is an error and tells me to try again shortly.
So I turn on the Mac App Store Debug Menu, clear cookies, and reset the app. I try to redownload again, but his Apple ID is still on my machine. He has never used this machine, not once. How do I fix this?
Any help would be appreciated.

http://www.apple.com/support/mac/app-store/contact.html?form=account

How do I install snow leopard from the email/pdf Apple sent me if I dont have the Mac App store?

I need to update my Mac to snow leopard. I purchased it online, and they sent me an email with the redemption code. The instructions say I have to redeem it from the Mac App Store, but since you have to have Snow Leopard or higher to get the Mac App Store, I don't know how to redeem my purchase....please help.

You have half of the equation. Buy Snow Leopard and when the DVD arrives you use it to upgrade your Leopard system or erase the drive and install a clean copy of Snow Leopard. If you decide to do the former then be sure you use Disk Utility to repair the hard drive and permissions:
Repair the Hard Drive and Permissions
Boot from your Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
If you choose the latter do the following:
Clean Install of Snow Leopard
Be sure to make a backup first because the following procedure will erase
the drive and everything on it.
     1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came
         with your computer. Insert the disc into the optical drive and restart the computer.
         After the chime press and hold down the "C" key. Release the key when you see
         a small spinning gear appear below the dark gray Apple logo.
     2. After the installer loads select your language and click on the Continue
         button. When the menu bar appears select Disk Utility from the Utilities menu.
         After DU loads select the hard drive entry from the left side list (mfgr.'s ID and drive
         size.) Click on the Partition tab in the DU main window. Set the number of
         partitions to one (1) from the Partitions drop down menu, click on Options button
         and select GUID, click on OK, then set the format type to MacOS Extended
         (Journaled, if supported), then click on the Apply button.
     3. When the formatting has completed quit DU and return to the installer. Proceed
         with the OS X installation and follow the directions included with the installer.
     4. When the installation has completed your computer will Restart into the Setup
         Assistant. Be sure you configure your initial admin account with the exact same
         username and password that you used on your old drive. After you finish Setup
         Assistant will complete the installation after which you will be running a fresh
         install of OS X. You can now begin the update process by opening Software
         Update and installing all recommended updates to bring your installation current.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
Sign into the App Store with your Apple ID and password. Click on the Featured icon in the toolbar. On the right below Quick Links you will see the Redeem link. Click on it to redeem Mountain Lion.

Error in the Mac app store

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