Issue Description: When performing a simple search whilst trying to add a user to a Shared Mailbox, a Static Distribution list, or within Admin section (Local Administrators only) the results take an excessive amount of time to return or the search times out.
Latest Update and Guidance: There is a known issue with the Simple Search options at peak times and this is looking to be optimised in a future Portal release. When adding users to Shared Mailboxes or Static Distribution lists please where possible use the Advanced Search using the email address of the user you are trying to add. Local Administrators have an additional option to support the activities they perform that is impacted by this simple search issue. LAs could run a Mailbox extract (Reports -> Mailbox Report) so they can then identify the users email address in that extract and search for it directly in Advanced Search so the result is found much quicker.
