Colin Charles Agenda

Fixing Time Machine: Backup failed with error: 11

Got the dreaded “Backup failed with error: 11” with Time Machine. Actually, I only got the dreaded message from the Console – the application itself, just kept failing silently with no suggestions (Apple, this is your cue to make Time Machine a little more useful). Nothing in Apple’s knowledgebase. Nothing seemingly useful come up in a Google search (i.e. something conclusive)

Solution? Delete:

/Time Machine Backups/Backups.backupdb/nameOfComputer/date.inProgress

It’ll ask for your password, and be gone with the file. Now the backups should start working again.

An example of what the Console showed:

13/08/2008 12:51:57 /System/Library/CoreServices/backupd[4946] Error: (-43) copying /Users/byte/Library/Application Support/Adium 2.0/Users/Default/Logs/AIM.bytebotdotnet to /Volumes/Time Machine Backups/Backups.backupdb/lovegood/2008-08-13-125154.inProgress/424A6617-37A5-4C20-8845-764D9167E317/Macintosh HD/Users/byte/Library/Application Support/Adium 2.0/Users/Default/Logs
13/08/2008 12:51:57 /System/Library/CoreServices/backupd[4946] Copied 702 files (169 KB) from volume Macintosh HD.
13/08/2008 12:51:57 /System/Library/CoreServices/backupd[4946] Copy stage failed with error:11
13/08/2008 12:52:03 /System/Library/CoreServices/backupd[4946] Backup failed with error: 11
13/08/2008 12:55:31[73] (0x10dbd0.Locum[4961]) Exited: Terminated