Outlook slow and crashing lately

Blame it on KB3097877  / Windows update

Search to see if it was deployed using an elevated cmd prompt;

wmic /output:stdout qfe get hotfixid | find "KB3097877"

If it shows up as installed; seach manually in installed updates and uninstall it / reboot

Generating Active mailbox user list in Exchange 2010

In EMS

Get-MailboxServer | Get-Mailbox | foreach-object {$email = $_.primarysmtpaddress; $_ | Get-MailboxStatistics | where{$_.DisconnectDate -eq $null}| select DisplayName, @{label="TotalItemSize(MB)";expression={$_.TotalItemSize.Value.ToMB()}}, StorageLimitStatus, LastLogonTime,DeletedItemCount,@{Name="EmailAddress";expression={$email}}} | Format-Table

With help from various sources online

Add to export to csv

| epcsv c:\ActiveMailboxes.csv