From: Sender@veritas.com
Sent: < Date / Time >
To: admintest@arctera.com;
Subject: Active Directory Synchronization failure(s)
Hello Administrator,
This is an auto-generated email to notify you that Active Directory Synchronization encountered 3 failure(s) while it was processing some User(s) from your company. Following is the list of failed User(s):
demoaccount@democloud.com
JohnDoe@democloud.com
12345@democloud.com
Please try to run the synchronization process again. If the problem persists, please contact your client services representative
get-mailbox Test123@arctera.com |fl name,GUID
Name: Test123@arctera.com
GUID: 7f858372-fe69-4a2b-917f-1e1055720033
Install-Module -Name ExchangeOnlineManagement -Force
Import-Module ExchangeOnlineManagement
Connect-ExchangeOnline
Get-Mailbox -Identity "john.doe@contoso.com" | Select-Object Name, Guid
Get-Mailbox -ResultSize Unlimited | select PrimarySMTPAddress,GUID | Export-CSV C:\O365userguids.csv -NoTypeInformation
Once the GUIDs have been gathered, open a case with Arctera support. In the body of the update request, please include the users full primary SMTP address and GUID, or the CSV file to be updated
If there are only a small number of accounts to modify, the changes may be made directly in the Arctera Administration portal.
Before changes can be made in the Arctera Administration portal, ensure the environment is configured to Manage account provisioning using the console application.



NOTE:
Be sure to update Active Directory (AD), as well. Failure to do so, will cause the error will return, with the next synchronization, if the email address being updated/removed, is still listed in AD, on this same account.
If the account no loner needs to be synchronized, they should be removed from the Sync Jobs/Tasks to resolve this issue.
If the email address cannot be found, in the Arctera Administration portal, this is an indication the account or one of its aliases has been deactivated.
To modify a deactivated account or alias, please open a case with Support.
There are two main causes for this issue
This can be caused by factors such as:
After a scheduled/manual user sync using CloudLink or O365 Sync, the administrative contact(s) receive a user synchronization failure notification email from Sender@arctera.com.