Outlook Cached Mode Is Greyed Out!

Ok, so you or someone you know and love has been messing around with disabling chached mode and/or offline folder file settings.  Lots of reasons to do this, and lots of reasons to un-do this.  Doing it is pretty easy through customizations and/pr group policies.  Un-doing it is a pain.  So here’s the secret….  Ready….  You need to hack the registry!  Surprise Surprise.  Ah, but what to hack????  Simple.  Go to HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\xx.0\Outlook\OST  (where xx is your current outlook version - YES this works for lots of versions) and simply delete the NoOST value.  Restart outlook (or start it as you shouldn’t have had it started in the first place) and whala! you can not reset your happy little cached mode thingy.  For those of you that are really interested in what the values in NoOST mean….

  • 0—An offline store is set up by default and used for calendar caching. You can enable offline access and use the offline store. This is the same as the absence of the OST key and NoOST entry.
  • 1—An offline store is set up by default and used for calendar caching. You can’t enable offline access and use the offline store. The options on the Microsoft Exchange Server Properties dialog box aren’t available.
  • 2—An offline store isn’t set up by default, and you can’t enable offline access and use the offline store. The options on the Microsoft Exchange Server Properties dialog box aren’t available.
  • 3—An offline store isn’t set up by default, and you can’t enable offline access and use the offline store.

There - aren’t you glad you read on!

 I didn’t think so.

 

ds

  1. #1 by DollarBill on May 17th, 2012 - 8:52 am

    I also had the same issue in Outlook 2010 on Windows 7 and found the setting in a different location.

    Open Regedit, and browse to
    [HKEY_CURRENT_USER\Software\Policies\Microsoft\office\14.0\outlook\cached mode], and delete the key “enable”=dword:00000000.

    This hands back over the reigns over toggling cached mode on or off by the user.

    We do not have cached mode configured via Group Policy, and this was not happening to all users, but for some, this fix was what worked.

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