When I was trying to synchronization my Outlook OST mailbox to Exchange server, I found some discrepancy, Like I am able to read my mails in Outlook Web but not them in my mailbox. These issues are coming due to synchronization issues.

  • Synchronizer Version 14.0.6109
  • Synchronizing Mailbox 'user profile name' 
  • Synchronizing local changes in folder 'Deleted Items'
  • Uploading to server 'outlook.xyz.com' 
  • Synchronization of some deletions failed.
  • [80004005-501-4B9-130] (Error Code)
  • The client operation failed.
  • Microsoft Exchange Information Store 


To resolve these synchronization issues, I would like to refer an inbuilt tool "OST Integrity Check". Before using this, please exit from MS Outlook and start OST integrity check tool. It is an excellent tool, but takes a lot of time.

So to save your prestigious time, I would like to refer an excellent third party solution, Convert OST to PST. It is a quick and effective solution to easily resolve all kinds of issues related to OST files. For more information about the software, visit- https://www.nucleustechnologies.com/datarecoveryblog/deal-with-synchronization-issues-between-ost-and-exchange-server

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