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System requirement for DS Service


The following software requirements must be met to ensure the proper functioning of DS Service.

Server Component



Microsoft Windows Server
Windows Server 2022 (FULL)
Windows Server 2019 (FULL) (*Extended Support until Jan 9, 2029)
Windows Server 2016 (FULL) (*Extended Support until Jan 12, 2027)

Remark: Operating system is only supported in English language


Microsoft Exchange Server
Exchange Server 2019 (*Extended Support until Oct 14, 2025)
Exchange Server 2016 (*Extended Support until Oct 14, 2025)
Microsoft 365 (E3, E5, Business Basic, Business Standard, Business Premium)
Office 365 (E1, E3, E5)
Exchange Online (Plan 1, Plan 2)

Note: Exchange Server must have EWS Application support, please refer to the Exchange Online Service Description
These are the Exchange Servers that Add-On Products has confirmed as supported, but other editions will often work as well. Don't hesitate to contact Add-On Products to clarify if your specific environment is supported.

Microsoft .NET Framework
.Net Framework version 4.7.2

Google Chrome version 76 and above
Microsoft Edge version 80 and above

Microsoft SQL Server
SQL Server 2022
SQL Server 2019
SQL Server 2017 (*Extended Support until Oct 12, 2027)
SQL Express 2022
SQL Express 2019

By default, the DS Service is using the free Microsoft SQL Compact layer as the data store, for production installation we do recommend using a SQL Server for better stability and performance. Please see the KB: Different database possibilities for Digital Sign Service for Server

Hybrid Exchange environments
Are not supported by DS Service, Workspace and Digital Sign Client

Resource Central (Optional)
Resoruce Central 4.2 Hotfix 1 (4.2.0009.0003) and above

Product support Lifecycle
Product support Lifecycle policy for DS Service  can be found here

* Extended Support
Add-On Products offers Extended support to clients using certain “Out of Mainstream Support” Microsoft products with our software. This allows you to retain support access for your Add-On Products software while continuing to use older Microsoft products.

Whenever Add-On Products releases a new ‘major release’ (like version 7.0 > version 7.1 or version 7.1 > version 8.0), we will update our system requirements for the product to only contain Microsoft platform products versions, which are in Microsoft Mainstream support. See Microsoft Lifecycle Policy.

If you use a Microsoft product which has ended its mainstream support, you may still be able to be covered by our support – just purchase extended support for the Add-On Products product in question. Add-On Products Extended support will be available as long as Microsoft has the platform under extended support. For each platform check the expiration date listed under "Extended End Date" under Microsoft Lifecycle Policy. For more information, please contact your reseller or us directly by sending an email by clicking here.


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