IronBarcode on .NET Framework: NuGet Package Fails to Install or Load on Visual Studio 2015

Overview

Older versions of Visual Studio do not fully support modern NuGet package formats such as netstandard2.0, which IronBarcode targets. On legacy setups — Visual Studio 2015 with VB.NET projects on .NET Framework 4.5–4.8 — this prevents the package from installing or loading. The fix is to move to a current Visual Studio and IronBarcode version with the .NET Framework 4.8 developer pack in place.

Environment

• OS: Windows 11
• Language/Runtime: VB.NET, .NET Framework 4.5–4.8 (Visual Studio 2015)

Version Metadata

• Version Found: 2024.11.5

• Version Resolved: N/A

Cause

The failure appears to stem from older Visual Studio versions not fully supporting modern package formats such as netstandard2.0. Visual Studio 2015 in particular is outdated, and the behaviour could not be reproduced on Visual Studio 2022 — the netstandard2.0 link is the most likely cause but was not confirmed by reproduction.

Solution

1. Recommended: Upgrade to Visual Studio 2022. Older IDEs like Visual Studio 2015 do not fully support the netstandard2.0 package format IronBarcode ships, which is the root of the install and load failures.
2. Use the latest IronBarcode release (2026.4.2 or newer). The latest version installs and reads barcodes correctly on current tooling.
3. Install the .NET Framework 4.8 Developer Pack and the .NET Framework 4.8 runtime on the build machine.
4. Use PackageReference instead of packages.config for the project's NuGet references where possible.