Fixing the Mac App Store Error 100 issue

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If you’ve just updated your Mac today, you’ll notice the new Mac App Store sitting on your dock.

All is great when you immediately fire it up and try to download an application. But after doing so, you might get a nasty ‘unknown error (100)’ problem.

So how do you fix this problem if it’s unknown? Well, the solution to this problem is actually rather simple.

The main issue with this problem, so it seems, is that the Mac App Store (obviously rushed out to us Mac users) has a bug where it does not display the latest Apple ID’s policy!

By not agreeing to the latest change in the Apple ID policy, your account is locked from downloading anything from any of the stores. It’s like not agreeing to the latest policy change that’s clearly meant to include the Mac App Store in the terms and conditions. Rather weird of course 🙂

So to fix this problem, all you have to do is just the following:-

  1. Open up iTunes
  2. Login with your Apple ID (obviously)
  3. Select to download something. A free app for your iPhone, iPod Touch or iPad would be great example. Otherwise, download a free song or something.
  4. You should see the new policy being flashed out to you for your agreement to it.
  5. Well, click agree and voila, your account is back to allowing you to download stuff!
  6. Re-open Mac App Store and you’re good to go!

That’s all it took for me to get my account working again!

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