@ahmed qureshi
Hi,
If you have a Visual Studio subscription, you can download it from there.
Otherwise, you might have to contact a Microsoft distributor to get the LTSB version.
Also, LTSB version is only available for volume license customers. For the volume license issue, it is recommended to ask for help from our Volume License Center.
https://www.microsoft.com/Licensing/servicecenter/Help/Contact.aspx
Hope above information can help you.
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