Solve Slow iDisk Syncing After Upgrading to 10.6 (Snow Leopard)

I use iDisk Sync (via MobileMe) to keep my desktop and my laptop in sync so I don’t have to remember to copy files back and forth every time I grab one or the other. This worked great until my upgrade to 10.6 – ever since then the iDisk status bar would say “Checking items” for hours, never really seeming to do anything. I finally found a fix that seems to have done the trick, thanks to Matio Martin and John Brissenden over at this very long support post. Here are the steps:

  1. Go to System Preferences > MobileMe > iDisk
  2. Switch off iDisk sync and keep it switched off
  3. Log out of MobileMe in the Account tab
  4. Log in again with nonsense login details (make up anything – you’ll get a login error. This somehow “resets” everything)
  5. Log in properly with your correct user/pass
  6. Turn iDisk syncing back on (you may need to re-enable everything on the Sync tab as well – just choose “Merge Data” – everything worked flawlessly for me)

Granted, this will take some time as each machine re-downloads everything on your iDisk. It took about 30 minutes to download the 2.5GB I have on my iDisk. But once that was completed it’s working smoothly again – almost feels even faster than it was on 10.5. I can’t tell you exactly how or why it works – but it appears as if it has re-mapped all of the files and it’s no longer churning endlessly in vain.

  1. It should be added that you must do this action at the same time with all of your machines.

    • Yes! Thank you for adding that. Without doing this on all machines you’ll still have the same issues.

  2. Spoke too soon… the problem is back and just as bad, if not worse, as before.

    I did some reading, and I really suspect that it is an issue with MobileMe services. I also read that a fix is being worked on by Apple, but it won’t be released until 10.6.1… Gee, thanks Apple.

  3. Whew… looks like this is now fixed in 10.6.1

    • Luc
    • November 1st, 2009

    I did not get the error message but my iDisk is synching properly now. Thanks!

    • Viv
    • January 4th, 2010

    Dude You So Rock!!!
    It worked…Thanks so Very Much!!!!

    • Viv
    • January 4th, 2010

    I thought it worked but it didn’t…Oh….

    • Hi Viv,

      This was fixed for most by installing the update to 10.6.1 or 10.6.2. Did the upgrade not work?

    • Gaz
    • February 9th, 2010

    Many thanks for this – even though I am on 10.6.2 with a new iMac/MacBook combo the iDisk suddenly stopped syncing a couple of days back. Mobile me support didn’t suggest the above workthrough, but everything seems to be working well again thanks to this.

    Good work!

    • Zippo
    • March 11th, 2010

    Found a working solution here >>

    Worked for me. As often, deleting temp-files and other holding files usually does the job…

    Good Luck!

    • Zippo
    • March 11th, 2010

    Copied from the above link:

    “First, stop iDisk sync if it is already on. Then, mount your iDisk in finder. Once the root level folders are visible, Fire up Terminal, and type

    defaults write AppleShowAllFiles TRUE

    This will make the invisible files there visible. Then, delete two files (.FileSync and .Temp..)

    Once this is done, type defaults write AppleShowAllFiles FALSE to hide invisibles again.

    Finally, turn iDisk sync back on. Sync should be fixed, you can verify this by the absence of the typical error message in Console.”

    -thanks to Dr K Laji for this solution!

    • Alex
    • April 27th, 2010

    Great, works fine again. Cheers!!!

    • Colin
    • May 25th, 2010

    Disaster. I was using my iDisk as a document directory so that I could access all my files with my iphone. I was however getting the problem that my iDisk was no longer in sync. Doing this meant that it was the iDisk server version of my files (i.e. those that were out of sync and out of date) that were forced onto my computer, deleting therefore all my important files.

    Not such a good a solution I am afraid.

    • Derek
    • August 5th, 2010

    Worked for me thanks for the solution

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