--- title: "Uniprint: Error when Microsoft .NET 4.5 is installed on Uniprint 8.3 server" slug: "uniprint-error-when-microsoft-net-45-is-installed-on-uniprint-83-server" updated: 2024-04-15T11:46:46Z published: 2024-04-15T11:46:46Z canonical: "kb.pharos.com/uniprint-error-when-microsoft-net-45-is-installed-on-uniprint-83-server" --- > ## Documentation Index > Fetch the complete documentation index at: https://kb.pharos.com/llms.txt > Use this file to discover all available pages before exploring further. # Uniprint: Error when Microsoft .NET 4.5 is installed on Uniprint 8.3 server ### Symptoms: - ERROR: "Service cannot be started. System.TypeInitializationException: The type initializer for '' threw an exception. ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt." - Pharos Systems Secure Release Service fails to start - User cannot print (Secure Release or Direct) ### Environment: - Uniprint 8.3 (any build) - Microsoft Windows Server - Microsoft .NET 4.5 --- ### Cause: It has been found that the installation of Microsoft .NET 4.5 on a server running any build of Uniprint 8.3 (including Service Pack 1) will cause the Secure Release Service (SRS) to stop working due to an incompatibility between a component of SRS and a module installed with .NET 4.5. This can happen during Windows Update with the application of Microsoft patch KB2858725. ### **Resolution:** Please read below to determine what to do depending on the Uniprint server's current state: Microsoft .NET 4.5 Is **NOT** Installed *Action:* Do NOT install Microsoft .NET 4.5. You will be notified via the Pharos Communities site when it will be safe to install this version of .NET (this will be accompanied by an update to Uniprint). Microsoft .NET 4.5 **IS** Installed *Action:* Uninstall Microsoft .NET 4.5 and then reinstall Microsoft .NET 4.0. This will restore .NET 4.0 functionality. You will be notified via the Pharos Communities site when it will be safe to install this version of .NET (this will be accompanied by an update to Uniprint). ## Related - [Ricoh iMFP 1.3.2 - Charges multiple times for same job](/ricoh-imfp-132-charges-multiple-times-for-same-job.md) - [Pharos Beacon Update: October 2020 Release Notes](/pharos-beacon-update-october-2020-release-notes.md)