OWA is not showing all users in the GAL list

Question: Some of users are missing in GAL list while viewing in OWA or Outlook ?

HC set organization name in a Mailbox user CustomAttribute2 value if it is empty then this user will not list in the GAL.

Here is the useful command to check the CustomAttribute 2 value for an organization (which you can also see individually in Adsiedit.msc)

Check CustomAttribute 2 value for all users in an organization
get-mailbox -organizationalunit 'OrgName' |fl customAttribute2

Set CustomAttribute 2 value same as organization name
get-mailbox -organizationalunit 'OrgName' | set-mailbox -CustomAttribute2 'OrgName'

Note: OrgName = Replace it with the actual Organization Name 

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