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In the previous article, we did configure DKIM record for Office 365. Before installing Azure AD Connect and sync the on-premises AD to Azure AD, it’s essential to use Microsoft Office 365 IdFix. The tool will show you which AD objects have errors and fix them. If there are no errors, you are good to go. In this article, we will look at how to use the Microsoft IdFix tool.
Table of contents
What is IdFix?
IdFix is used to perform discovery and remediation of identity objects and their attributes in an on-premises Active Directory environment in preparation for migration to Azure Active Directory. IdFix is intended for the Active Directory administrators responsible for directory synchronization with Azure Active Directory.
The Microsoft Office 365 IdFix tool provides you with the ability to identify and remediate object errors in the Active Directory in preparation for deployment to Azure Active Directory or Office 365. You will then be able to successfully synchronize users, contacts, and groups from the on-premises Active Directory into Azure Active Directory.
The setup will install the following prerequisites if they are not already present on your machine:
- Microsoft .NET Framework 4.5.2 (x86 and x64)
- Windows Installer 3.1
After you download the file, run the setup.exe. It will ask you to install IdFix. Click Install. At the moment of writing, IdFix version 184.108.40.206 is the latest.
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How to use IdFix
In IdFix, click on Query. If there are errors, it will show the AD object with the error. In this example, there are three errors. Go to the AD object with the error and adjust the value.
After fixing the errors, click on Query. The list will be empty.
See the list of errors that you might see in IdFix.
|Character||The Value contains an invalid character. The suggested Update will show the value with the character removed.|
|Format||The Value violates the format requirements for the attribute usage. The suggested Update will show the Value with any invalid characters removed. If there are no invalid characters, the Update and Value will appear the same. It is up to the user to determine what they really want in the Update. For example, SMTP addresses must comply with RFC 2822, and mailNickName cannot start or end with a period.|
|TopLevelDomain||This applies to values subject to RFC 2822 formatting. If the top level domain is not internet routable, then this will be identified as an error. For example, an SMTP address ending in .local is not internet routable and would cause this error.|
|DomainPart||This applies to values subject to RFC 2822 formatting. If the domain portion of the value is invalid beyond the top level domain routing, this will be generated.|
|LocalPart||This applies to values subject to RFC 2822 formatting. If the local portion of the value is invalid, this will be generated.|
|Length||The Value violates the length limit for the attribute. This is most commonly encountered when the schema has been altered. The suggested Update will truncate the value to the attribute standard length.|
|Duplicate||The Value has a duplicate within the scope of the query. All duplicate values will be displayed as errors. The user can Edit or Remove values to eliminate duplication.|
|Blank||The Value violates the null restriction for attributes to be synchronized. Only a few values must contain a value. The suggested Update will leverage other attribute values in order to generate a likely substitute.|
|MailMatch||This applies to Dedicated only. The Value does not match the mail attribute. The suggested Update will be the mail attribute value prefixed by “SMTP:”.|
We did fix the synchronization errors on the AD objects with IdFix, and we are good to go.
In the next step, we will install and configure Azure AD Connect.
In this article, you learned how to use IdFix – Directory synchronization error remediation tool. Use the IdFix tool before installing Azure AD Connect and make sure that there are no errors. The list with errors and the given description will let you understand why the error shows up.
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