[Expert Guidance] Fix “Your Database Could Not Be Rebuilt Error 18000”

Rebuilt Error 18000

Mac 2011 Outlook is almost similar to MS Outlook for Windows which is widely used among all the technical users. However the integrated set of features and the unmatched functionalities Mac Outlook is not safe for the corruption issues. Mentioned below is the paragraph which would explain in details about this specific issue which is seen by users while starting Outlook for Mac. Even sometimes Outlook for Mac users finds some error messages such as “your database could not be rebuilt error 18000” during the starting of Outlook. But, you need not worry, in this post, you will get complete information on how to resolve “your database could not be rebuilt error 18000”manually as well as automatically.

Something About “Your Database Could Not Be Rebuilt” Error 18000 Outlook Mac 

However, before solving the main issue, the main focus must be is that why this error arrives? This type of error generally occurs when ACL (Access Control List) of some particular user is dis-associated with MS user account data for its original profile.

In addition to that, there are also some other reasons like corruption, internal compatibility problem or system glitches. This error basically indicates towards rebuilding Outlook database utility.

How to Fix Error 18000 Outlook Mac Manually?

Fix #1: Rebuild An Identity Database

The first manual solution available to fix “your database could not be rebuilt error 18000” issue that is rebuilding Outlook database profile. To do this, you need to follow the below given steps:

Step 1: At first, you have to hold ‘ALT’ key from the list of option

Step 2: Next, hit on the MS Outlook icon that is displayed on the clock. If by chance the MS Outlook is not visible to users, then you should go to Application.

Step 3: After this, simply click on Microsoft Office 2011 and then go to Office folder /Outlook.

Step 4: It will display all the Microsoft Database Utility

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Step 5: Now, you have to hit on ‘Rebuild’ option to fix outlook error 18000.

Fix - Outlook Search Doesn't Work - Technipages

After that close the Outlook and restart again to check if rebuilt error in Mac Outlook is still present or not.

Fix #2: Move Header Folder of the Exchange Database

To do so, you have to try the beneath guided instructions carefully:

  • First of all, close your Outlook, then go to the Menu and simply click on Documents.
  • In this step, open newly created identity & then open Data Records.
  • Next, copy Database Headers from a Database header folder.
  • Then, paste all the copied stuffs in Data records of the Main identity.
  • Lastly, replace all & Exit from all the Windows.

Fix #3: Create the Fresh Outlook Identity

Step 1: Firstly, close Outlook, then open the Microsoft Database utility

How to Rebuild the Outlook 2011 Database - Knowledge Base - Global Site

Step 2: After that, you have to delete all identities. It is typically done to confirm that there’s no any corrupted identity exists in your Mac system.

Step 3: Now, create the new identity.

Step 4: And close Microsoft database utility.

After trying these three methods, if you find the issue once again then be sure that you have corruption in Outlook 2011 for Mac OLM files. Therefore you need to take some necessary steps to repair the OLM file issues with all the possible procedures. In fact there are hardly any built in manual methods which are provided to solve the issue and so users have to bank their hands on third party tools.

How to Resolve “Your Database Could Not Be Rebuilt Error 18000 Automatically?

However in order to settle Outlook 2011 for Mac OLM errors or ‘your database could not be rebuilt’ error message, then you need to use third party software like OLM Repair Tool. The software is really competent to remove damaged & corrupt files productively without requiring any technical knowledge. It’s a simple way to repair your damage and corrupt OLM files.


It is capable to eliminate all kinds of error messages and also this tool offers the conversion of OLM file contents into PST file format for those users who are looking for platform conversion or searching for solution to transfer files for Mac to PC.

This repair tool has user friendly interface and so it can be used by any non-technical user to accomplish OLM file recovery in very few steps. So, if your OLM file is corrupt due to any reason, then just download OLM Repair Tool and resolve your issues in just few seconds.

Easy Steps For Using OLM Repair Tool Are Shown Below:

Step 1: Click ‘Browse’ to select the corrupt/damaged OLM file and start the repairing process by clicking the ‘Start’ button.images-1

Step 2: The scanning process starts, which is indicated by the ‘Scanning OLM File‘ status bar. You can click the ‘Stop’ button to discontinue the process in the middle.

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Step 3: After completion of the OLM repair process, the software provides the detailed summary of the entire process which shows the number of recoverable mail objects.

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Step 4: Click on the “mail” icon to preview your recoverable mail in which middle pane shows the mail in the selected mail folder from the left and right pane shows the content from middle pane.

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Step 5: Click the ‘Address Book‘ icon to preview your recoverable contacts in which middle pane shows all the contacts in the address book and right pane shows the details of the selected contact.

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Step 6: Click the ‘Calendar‘ icon to preview your recoverable Calendar notes in which middle pane shows all the calendar entries and the right pane shows the details of the selected entry.

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Step 7: By hitting the ‘Notes‘ icon, you can preview your recoverable notes. The middle pane will show all the notes which is available in your mailbox and right pane shows contents of the selected note.

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Step 8: Hit the ‘Task‘ icon to preview your recoverable tasks in which middle pane will show all the task in the mailbox and right pane will show the content of the selected task.

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Step 9: Click on the ‘Save Repaired File‘ to save the recovered mail objects. Provide the destination name and the file will be saved by the name-Main identity.rge.

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Time To Conclude

Well, Microsoft Outlook is mainly used by several users in their professional life. But, in this case, if your database is corrupted due to some reason and you can’t access to those files, then it might really affect your work.

However, after reading this post, you might have known the effective ways to repair “your database could not be rebuilt error 18000” issue with ease. But, for direct resolution, you can go with the best OLM Repair Tool.

I hope you liked this post…


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