Publishing Web apps fails on Linux with an incorrect-format error

Status: Fixed
Fixed in: v26.10.2
Area: ide
Source discussion: https://forum.objo.dev/d/1274-pulish-web-app-error
Last updated: 2026-10-12

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Public summary

Publishing a Web app from Objo Studio on Linux fails at the "Embedding Web application" step. The first Publish attempt reports:

Could not load file or assembly 'Microsoft.NET.HostModel, Version=10.0.11.0, Culture=neutral, PublicKeyToken=adb9793829ddae60'. An attempt was made to load a program with an incorrect format.

and second and later attempts report:

An attempt was made to load a program with an incorrect format. (0x8007000B)

Every Web project fails identically, including the bundled examples. Running projects and publishing Desktop apps (Windows and Linux targets) are unaffected. Users on Linux cannot Publish Web apps at all until this is fixed.