Description

On Windows, installation of the OSIB.Reloaded.msix package fails because of the signing certificate.
The installer window shows the following message and the Install button is disabled:

(Translated: “We can't verify the publisher of this app. Contact your system administrator or the app developer to get a new app package with verified certificates. The root certificate and all immediate certificates in the signature must be verified. (0x800B010A)”)

Version

• OSIB Reloaded: v0.3.1 (asset OSIB.Reloaded.msix on the release page)
• Platform: Windows 11 - 25H2 - 26200.7840
• Architecture: x64

Steps to reproduce

1. Download OSIB.Reloaded.msix from the v0.3.1 release:
   https://github.com/osintbuddy/osintbuddy/releases/tag/v0.3.1
2. Double‑click the file to launch the MSIX installer.
3. Observe that:
   • The publisher is shown as Unknown.
   • The error message above is displayed.
   • The Install button stays greyed out and the app cannot be installed.

Expected behavior

• The MSIX package should be signed with a valid certificate chain that Windows can verify, allowing a normal installation.
• The publisher should appear as a verified name instead of “Unknown”.

Additional information

• Developer mode / sideloading is enabled.
• No additional certificates are manually installed on the client.