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Outlook 2007 Unable to Expand Folder: Know How to Synchronize Offline Folders - Outlook PST Repair

Outlook 2007 Unable to Expand Folder: Know How to Synchronize Offline Folders

MS Outlook 2007 is one such application that enables you to store your personal informations like contacts, emails, calendars, notes, tasks etc. Using this email client application you can easily access your emails and it becomes highly communicative application when you connect it with Microsoft Exchange Server. With the help of its offline storage feature you can copy your entire data available on exchange server to the local OST files and can access them easily even in the conditions of network failures. These OST files synchronize each time you connect to the Exchange Server but sometimes the synchronization fails and Outlook 2007 Unable to Expand Folder .

To understand the problem in detail let us consider a scenario when you attempt to open Outlook or try to synchronize the offline folders but fails to do so as the below error message appears:

"Unable to expand the folder. The set of folders could not be opened. Errors could have been detected in the file xxx.ost. Quit all mail-enabled applications, and then use the Inbox Repair Tool."

 As a result of above error message you are unable to synchronize offline folders i.e. OST files with MS Exchange Server. It also makes the OST files inaccessible due to which you are unable to open it.

 There can be various reasons behind the occurrence of Outlook 2007 Unable to Expand Folder like exchange server crash, EDB corruption, deletion of mailbox etc. But the major cause is corruption of OST files. In order to resolve this issue you need to follow below mentioned steps:

  • Close MS Outlook and find the corrupt OST files which is creating the problem
  • Create backup of original OST files and convert OST to PST files with the help of Outlook PST repair software
  • Delete the corrupt OST files
  • Correct the account settings if it is incorrect
  • Create a new mail profile if it is damaged

In this way you will be able to resolve the problem of Outlook 2007 Unable to Expand Folder. But the best way is to convert OST files to PST using Outlook PST repair software. So, if you are getting such kinds of error it indicates that your have got corrupt OST or PST files and you need to repair them using effective software.

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