2Do

Mac says 2Do is damaged and won’t open the app

Starting 14th of February, hundreds of thousands of Mac users round the world will suddenly find that most, if not all, of their Mac App Store apps previously downloaded have suddenly become damaged. These apps won’t launch anymore either, and this will include 2Do.


This is a known bug on the Mac that Apple has now fixed. However, the fix may or may not work for you. Their recommendation is:

1) Try and reboot your Mac. If that doesn’t help:
2) Delete the app and download again from the App Store. Your data won’t be lost, simple drop 2Do.app from under Applications onto the Trash and empty it. Now download it again from the App Store.

On behalf of Apple, we sincerely apologize for the inconvenience caused.

If, after the above, you are unable to sync

Given the certificates expired, the app may refuse to sync with the previously stored state in the keychain. The following should help in case you have already synced your data to the cloud:

2. Install it again by downloading it from the App Store
3. Setup sync from Under Preferences > Sync
4. When prompted, select Replace Local Data



Attached Files
There are no attachments for this article.
Related Articles
How do I add items to Checklists or Projects?
Viewed 17,589.00 times since Fri, Jan 15, 2010
Does 2Do support syncing with Exchange?
Viewed 9,231.00 times since Sat, Nov 22, 2014
I don’t get any sound for my alarms, only a message
Viewed 6,501.00 times since Wed, Jan 20, 2010
I see a ’Forbidden’ error message during sync with iCloud
Viewed 3,677.00 times since Sat, Nov 22, 2014
2Do for Mac is hanging at launch and crashing when I try to open preferences
Viewed 2,925.00 times since Sat, Dec 20, 2014