Outlook error code 0x80072f06

Fixing 0x80072f06 Offline Address Book Error

The blog incorporates the solutions to resolve the unknown error code 0x80072f06 in MS Outlook. It explains all about this Outlook error code. The reasons behind the occurrence of error and the possible methods to overcome it have also been elaborated.

MS Outlook is one of the most popular email clients used in various large and small organizations across the globe. It is well equipped with one of the best features that enable the users to access its files both in online as well as offline mode. As a result of this feature, users are facilitated to access the files even in a weak internet connection or in absence of internet connectivity. But, like other email clients, there are also some undesirable scenarios in which users experience errors. One such unknown error is 0x80072f06 Offline Address Book. So, let’s discuss this particular error in detail.

Outlook Unknown Error 0x80072f06

The 0x80072f06 Exchange 2016 is a frequent error in OST file. It arises when Outlook is not in synchronization with the Exchange Server. Every email client consists of a contact list i.e. Offline address book (OAB). OAB is somewhat similar to GAL i.e. global address list present in the mailbox of the Exchange Server. The Exchange Server stores all the information such as the name, email address of the user in Outlook. In the presence of OAB, Outlook need not connect to Exchange Server every time the mail is sent.

Why Does 0x80072f06 Offline Address Book Error Occur?

Outlook displays this error code when OAB is updated from the Exchange Server by the user. The reasons for the occurrence of the error have been explained below:

  • Improper Outlook installation.
  • Damage in the Windows system file.
  • Improperly updating .oab file.
  • Issues with Exchange security certificates.

How to Fix Error OAB 0x80072f06 Outlook 2016?

This Outlook error should be fixed as it may lead to inaccessible Outlook data files. So, users approach an effective method to fix this error code in Outlook

Method 1: Perform the System Restore

One of the solutions to troubleshoot this error is system restoration. You can perform the system restore to the previous time. For doing this, go through the below steps-

  • Log in on your system as an administrator.
  • Go to Control Panel and choose the system option in the “All control panel items” option.
  • On the left side of the opened window prompt, select the option System protection.
  • Now, on the system properties wizard, first, click on system protection and further on system restore.
Outlook error code 0x80072f06

Next, follow the instructions and procedure for the system restoration. It will take a short duration of time. After the completion of the restore, check whether the issue is resolved or not.

Method 2: Delete the Existing OAB file

Sometimes, this Exchange 2016 Offline Address Book may arise due to improper sync between the Exchange Server and OAB file. So, there are chances that after deleting the existing OAB file, the error gets resolved. You can download a new OAB file from the Exchange Server once it gets deleted. Once the newly downloaded OAB file gets synced with Exchange Server, error OAB 0x80072f06 Exchange 2016 may no longer arise.

Method 3: Automated method of using a professional tool

Performing the above manual techniques, if this particular Outlook error code doesn’t get fixed, you need to take the help of a professional OST to PST Converter. It is an effective approach to troubleshoot this unknown Exchange Server Offline Address Book error. It successfully repairs and restores the corrupted OST files and makes them accessible again so that they can be used by the user. All in one, it is a trusted and feasible solution to the issue.


The users are advised that they should take steps to resolve the errors before they make your important data and files inaccessible to you. All about the Outlook error code 0x80072f06 have been explained in the above article. You can develop your way of fixing the issue without engaging in Outlook restoration. Thanks for reading this article.

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