Requirements
Information Technology professionals responsible for installing, maintaining, and supporting OneStream must satisfy the following requirements to best support an upgrade. They must also review the requirements and special notes in the Installation and Configuration Guide and Release Notes.
IMPORTANT: OneStream continues to use Microsoft's Long-Term Support (LTS) .NET versions, which are released every two years and supported by Microsoft for three years. OneStream Platform version 9.3.0 uses the .NET 10 development framework.
CAUTION: Platform Version 9.3.0 was developed using Microsoft .NET 10. As a result, all Business Rules for Platform Version 9.3.0 must be set up for .NET 10.
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OneStream Platform Version 9.3.0 or later requires Microsoft .NET 10.
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App Server and Web Servers
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Install the latest version of ASP .NET 10 Core Runtime Hosting Bundle (v10.0.5).
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Install the latest version of .NET 10 Desktop Runtime (v10.0.5).
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Client
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Install the latest version of .NET 10 Desktop Runtime (v10.0.5).
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IMPORTANT: Do not install the .NET SDK package. You may run into errors while upgrading if this is installed.
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OneStream Servers requires IIS 7 or later.
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In each application, complete the Compile all Business Rules and Formulas to verify that business rules use the proper syntax.
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If your applications are referencing any 3rd party DLLs that are not provided by OneStream, verify these DLLs are .NET 10 compatible. Contact OneStream Support (https://www.onestream.com/support/) to discuss available upgrade options.
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When upgrading OneStream, update the database schema to the most recent version.
IMPORTANT: All database upgrade steps must be taken sequentially. Users cannot skip steps or stop updates once started.
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Backup the Configuration files in your OneStream Share directory.
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For additional minimum system requirements, see Hardware and Software Requirements.
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When implementing Smart Integration Connector with the OneStream application, seeRequirements.
IMPORTANT: Self-hosted customers must have a successful database connection before the Database Upgrade. See Enable the Trust Server Certificate.


