why is a users outlook uploading 200gb to the azure cloud

Question

I cannot figure out why one of my users. As I'm an IT administrator for an Azure Hybrid environment, and one of the users is sending 200gb a day back into the microsoft data centers. His machine fan is on constantly. I ran the get-mailbox in powershell but i need more detailed powershell commands to see why this mailbox is I assume backing itself up constantly. Any ideas on how to check the outlook settings. I captured a pcap for 60 seconds but it looks like a lot of encryption that didnt allow following of the tcp packets. any ideas?

Answer 1

outlook usage 24hr.jpg

Answer 2

Hi @kali mike

Welcome to our forum!

Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client.

According to your description, it looks like Outlook is consuming a significant amount of data. You can check the Outlook settings from the following aspects:

1. Review Sync Settings: Ensure that the mailbox isn’t set to sync excessively.
2. Check for Rules and Alerts: Look for any rules that might be causing large data transfers.
3. Review Add-ins: Disable any unnecessary add-ins that might be causing issues.

In addition, I recommend this user to try creating a new Outlook Profile and see if you see any difference, Create an Outlook profile (microsoft.com).

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Answer 3

Hi @kali mike

Thanks for the sharing. I'm glad you found something that works.

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However, due to a recent update in forum policy, the question author now is not able to accept their own answers.

So I have written a brief summary of the solution this issue. Please feel free to accept it as the answer, which would benefit others who also has similar issues in forum.

[why is a users outlook uploading 200gb to the azure cloud]

Issue: I cannot figure out why one of my users. As I'm an IT administrator for an Azure Hybrid environment, and one of the users is sending 200gb a day back into the microsoft data centers.

Solution:

Define the user email

$userEmail = "user@yourdomain.com"

Connect to Exchange Online

Connect-ExchangeOnline -UserPrincipalName "admin@yourdomain.com" -ShowProgress $true

Get mailbox details

$mailboxDetails = Get-Mailbox -Identity $userEmail

Get mailbox statistics

$mailboxStats = Get-MailboxStatistics -Identity $userEmail

Get client access settings

$casMailbox = Get-CASMailbox -Identity $userEmail

Get mobile device settings

$mobileDeviceStats = Get-MobileDeviceStatistics -Mailbox $userEmail

Get OWA mailbox policy settings

$owaPolicy = Get-OwaMailboxPolicy -Mailbox $userEmail

Display the information

Write-Output "Mailbox Details:"

Write-Output $mailboxDetails

Write-Output "Mailbox Statistics:"

Write-Output $mailboxStats

Write-Output "Client Access Settings:"

Write-Output $casMailbox

Write-Output "Mobile Device Settings:"

Write-Output $mobileDeviceStats

Write-Output "OWA Mailbox Policy Settings:"

Write-Output $owaPolicy

Disconnect from Exchange Online

Disconnect-ExchangeOnline -Confirm:$false

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If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.