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Rabih El Haj youssefFlag for Australia

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Windows 10 C drive is full because multiple users logged in with large OST sizes

Hi everyone,
We have a small desktop store behind our TV In meeting room, when they try to log in to this desktop and setup outlook profiles most of the users have large share mailboxes attached to their work inbox with trying to cash on all her emails and share mailboxes options ticked in settings to download all emails from exchanges.

Q1: Is any way can prevent cash on emails to download more then 90 days?
Q:2 is any ways to disable cashe on to disabled downloads email to share mailboxes too ?

I prefer to apply the change in computer device not user profile

In our organisation we running windows server 2012 r2 , Active Directory and windows 10 20H2 roaming profiles.

I prefer to send me solution with steps please or some links on how to do that please.

Thank you in advance
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Here are some additional links that can help you with your requirements.

How to configure Outlook to limit the amount of data that is downloaded to an Offline Outlook Data File (.ost):

How to configure Outlook to download only the latest email:
Avatar of Rabih El Haj youssef


@CompPRobSolv is this will apply on user setting , i am afraid because most of the user have laptop and desktop and i am trying to apply the setting on any one who login in to desktop not their own laptop?

1. To limit the amount of email that is cached in Outlook, you can adjust the "Mail to keep offline" setting. This can be done by going to File > Account Settings > Account Settings in Outlook, selecting the email account, clicking on "Change," and then moving the slider for "Mail to keep offline" to the desired number of months.

2. To disable caching for shared mailboxes, you can go to File > Account Settings > Account Settings in Outlook, select the email account, click on "More Settings," go to the "Advanced" tab, and uncheck the "Download shared folders" option.

Using the registry key method should only work on the specific user (note the start of the key name).  The Group Policy method should apply to the device or to all devices specified over an AD environment.

I've not used either, so be sure to confirm that it does what you expect.

thank you for all your support and help