Disable Use of PSTs in Outlook 2016

Question

_{Friday, January 29, 2016 5:41 PM | 1 vote}

We had a grouppolicy per https://support.microsoft.com/en-us/kb/3058474 that
would prevent users from adding new PSTs and appending existing PSTs in Outlook
2013. We are currently upgrading to Outlook 2016, and the same policies don't seem
to apply. We are mapping to 16.0 instead of 15.0 for the new version of Office.
Please advise how to get this setup with Outlook 2016.

All replies (4)

_{Monday, February 1, 2016 5:08 AM ✅Answered}

Hi,

Based on my testing, the policies still work in Outlook 2016.

Please double check if you have the correct registry values created:

Prevent users from adding new .pst files:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook

DWORD Value: DisablePST

Value: 1

Prevent users from adding new data or content to an existing .pst file:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\PSTDWORD Value: PSTDisableGrow

Value: 1

In addition, DisablePST and PSTDisableGrow policies will be ignored when the DisableCrossAccountCopy policy is also used.

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook

DWORD Value: DisableCrossAccountCopy

Value: 1

Please have a look at your registry editor and check if you have this value set.

Please let me know the result.

Regards,

Steve Fan
TechNet Community Support

Please mark the reply as an answer if you find it is helpful.

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_{Thursday, September 21, 2017 9:46 AM}

Hi,

With me the above keys didn't work (Outlook 2016). I had to create them under:

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook

So not under policies!!

_{Monday, September 17, 2018 2:14 PM}

This is 100% correct and needs to be reflected in the above paths, save the next poor chap from going nuts

_{Monday, September 17, 2018 7:52 PM}

Hi Dustin, don't hesitate to mark my reply as answer or to give it a thumbs up ;-)