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Wednesday, November 14, 2007

Active Directory: Convert Global Groups to Universal Groups Bulk

Summary: There may come a time when you need to convert your Global Groups into Universal Groups such as if you're in a multi-domain Forest. This is because the Global Catalog server does not have a copy of Global Groups in other domains. This can cause a problem with Distribution list expansion.


Tip: To bulk change your Global Security or Distribution Groups into Universal Groups; you can use Admodify using the custom attribute tab of "groupType"


Download Admodify:

ftp://ftp.microsoft.com/PSS/Tools/Exchange%20Support%20Tools/ADModify


1. Launch ADMODIFY.EXE
2. Click Modify Attributes
3. Domain List=Choose your Domain; Domain Controller=Choose your DC
4. Check only Groups; Check Advanced Features; Click Traverse Subcontainers
5. Click the Green Arrow and now highlight your Domain
6. Click Custom LDAP query.

Global Security Groups

(&(objectcategory=group)(grouptype:1.2.840.113556.1.4.803:=-2147483646))


7. Click Add to list and click OK
8. Select All and click next.
9. Click Custom Tab. Click Make a customized attribute modification

Attribute Name: groupType
Attribute Value: -2147483640


Click Ok. This will convert your Global Security Groups to Global Universal Groups.

Use the following Chart to convert your Global Distribution Groups.


[Group Scope] [Group Type] [groupType value] [sAMAccountType attribute]

[Universal] [Distribution] [8] [268435457]
[Universal] [Security] [-2147483640] [268435456]
[Global] [Distribution] [2] [268435457]
[Global] [Security] [-2147483646] [268435456]
[Domain Local] [Distribution] [4] [536870913]
[Domain Local] [Security] [-2147483644] [536870912]


James Chong (MVP)
MCITP | EMA; MCSE | M+, S+
Security+, Project+, ITIL
msexchangetips.blogspot.com

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xml:lang="en" lang="en"> MS Exchange Tips: Active Directory: Convert Global Groups to Universal Groups Bulk