Uninstalling Exchange 2010


I am trying to uninstall Exchange 2010 as I have migrated all mailboxes to Office 365. When using program and features to uninstall exchange the Mailbox Role Prerequisites fail. Error Below

Uninstall cannot continue. Database 'Public Folder Database': The public folder database "Public Folder Database" contains folder replicas. Before deleting the public folder database, remove the folders or move the replicas to another public folder database. For detailed instructions about how to remove a public folder database, see http://go.microsoft.com/fwlink/?linkid=81409&clcid=0x409.

I would like to delete the replicas completely, not move to another server. I have done this before with exchange 2007 and used a couple of powershell commands to do so and it worked perfectly but for some reason exchange 2010 is being stubborn. Any Suggestions

Who is Participating?
Todd NelsonConnect With a Mentor Systems EngineerCommented:
It seems that you might not have the correct permissions set for the account you are using to remove Exchange or the permissions of the system PFs were modified.  Could be a red herring though.

Via the Exchange Toolbox, are you able to traverse the PF hierarchy and remove the server that you want to uninstall from the replicas manually?

Also, did you update the mailbox databases so they aren't associated with a PF DB and remove the PF replication of the OAB?
El FierroNetwork EngineerCommented:
run this command it removes everything left within your Public Folder database...you should be able to remove the public folder db.

Get-PublicFolderStatistics –Server SERVERNAME | Remove-PublicFolder
El FierroNetwork EngineerCommented:
if that one command doesnt work then you can use this guide ..
good luck
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cairnsfutureAuthor Commented:
Thanks ElFierro

When I run that command i get the below error. I looked at the guided you posted. Issue is Im trying to delete the replicas not move them to another server.

    + CategoryInfo          : NotSpecified: (0:Int32) [Remove-PublicFolder], MapiPartialCompletionException
    + FullyQualifiedErrorId : FE9F09C5,Microsoft.Exchange.Management.MapiTasks.RemovePublicFolder

Cannot delete the object '\NON_IPM_SUBTREE\OFFLINE ADDRESS BOOK\EX:/o=xyz/ou=Exchange Administrative Group (FYDIB
OHF23SPDLT)'. Please make sure that you specified the correct identity and that you have the correct permissions to del
ete it.
    + CategoryInfo          : NotSpecified: (1:Int32) [Remove-PublicFolder], MapiPartialCompletionException
    + FullyQualifiedErrorId : 96F0ECBA,Microsoft.Exchange.Management.MapiTasks.RemovePublicFolder
cairnsfutureAuthor Commented:
I have also used the below commands, still get errors about the replicas.

Get-PublicFolder -Server servername "\" -Recurse -ResultSize:Unlimited | Remove-PublicFolder -Server servername -Recurse -ErrorAction:SilentlyContinue -Confirm:$False
Get-PublicFolder -Server servername "Non_Ipm_Subtree" -Recurse -ResultSize:Unlimited | Remove-PublicFolder -Server servername -Recurse -ErrorAction:SilentlyContinue -Confirm:$False
Get-PublicFolderDatabase -Server servername | Remove-PublicFolderDatabase -RemoveLastAllowed

El FierroNetwork EngineerCommented:
Well you can always force remove it using adsiedit

    connect to your DC.
    Open ADSIEDIT.MSC console and connect to configuration.
    Go to the following path.

–> CN=Configuration –> CN=Services –> CN=Microsoft Exchange –> CN=YOUR ORGANIZATION –> CN=Administrative Groups –> CN=First Administrative Group –> CN=Servers –> CN=SERVER NAME +—> CN=InformationStore

Delete public folder Database.
Restart Exchange Information Store.
Refresh EMC and you should see that the database has been removed
Todd NelsonSystems EngineerCommented:

I've had a lot of success with the commands to provided from this link ... https://technet.microsoft.com/en-us/library/bb201664(v=exchg.141).aspx

Make certain there are no typos.

Alternately, I've needed to delete them via ADSI Edit as ElFierro stated.
cairnsfutureAuthor Commented:
Hello Todd

Those commands worked fine. However when trying to remove exchange 2010 it still say that there are replicas and they need to be removed. I used the commands below to tryand delete all the folders but get an error on the 2 command

Get-PublicFolder -Identity \ -GetChildren | Remove-PublicFolder -Recurse
Get-PublicFolder -Identity \Non_Ipm_Subtree -GetChildren | Remove-PublicFolder -Recurse

Modification of the '\NON_IPM_SUBTREE\EFORMS REGISTRY' folder isn't allowed
Modification of the '\NON_IPM_SUBTREE\OFFLINE ADDRESS BOOK' folder isn't allowed
Modification of the '\NON_IPM_SUBTREE\SCHEDULE+ FREE BUSY' folder isn't allowed

Any ideas?

El FierroNetwork EngineerCommented:
Have tried to force remove yet via ADSIEDIT.MSC as i mentioned before?
cairnsfutureAuthor Commented:
Thanks to all who commented. It is now removed. Had to fix permissions on the account and now all removed.

Todd NelsonSystems EngineerCommented:
Issues resolved by fixing permissions.
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