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How to change Windows Server Date & Time Format
How to change Date format on Server for all existing and new RDP users.
You are having a Server with X number of remote desktop licenses installed and you are currently having 20 Remote Desktop users already created. Whenever you create a new Remote Desktop user, by default, the Date Format set for the user based on user profiling set by Microsoft which is MM/DD/YYYY format.
Now, a client comes over and would request the date and time format to be set to DD/MM/YYYY format.
Steps and results:
From ‘Change Date and Time settings’ on bottom  > click on ‘Change Date and Time Settings’  >  ‘Change Calendar Settings’
Now a “Region and Language”  window and a “Customize Format” window will open up.
Under “Customize Format” change the Short Date to “dd/MM/yyyy”  These entries are case sensitive.
After clicking on ok, close the “Customize Format” window and under “Region and Language”   window, go to ‘Administrative’ tab > Click on ‘Copy Settings’
A ‘Welcome screen and user account settings’ window will open up. Out there, enable checkbox against “ Welcome screen and system accounts” and “New user accounts”
Refer to the screenshot
This will ensure that every time that you create a new Remote Desktop user, the date format of “dd/MM/yyyy” format will be taken up automatically.
So the question is, what about the existing users?
The existing users will continue to have the old Date format. So the only way to have their date format changed is to either recreate those user accounts with remote desktop access rights or manually have them change from ‘Change Date and Time Settings’
Go to Run > regedit.msc > go to HKEY_CURRENT_USER > Control Panel > International
Right click on ‘International’ and ‘Export’ to export the settings within International, where the date and time format is already set to ‘dd/MM/yyyy’
Refer screenshot below:


You can name that registry file as ddmmyyyy.reg
Now, all you need to do is zip that .reg file which you exported and email them to your respective users asking them to run that .reg file from their server desktop. Upon doing that, ask them to log off and login once and Voila! The changes are done.

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