Error during installation on Windows 11 PC

Installation & Configuration
1

Hello, I’m trying to install the desktop version of CollaboraOffice on a Windows 11 PC and I get the following error 0X80073D13. Can you help me? Thanks.

2

hi @Luigi

This error code 0x80073D13 usually appears when Windows Defender blocks the installation because it thinks the app isn’t trusted, or when an AppX/MSIX package is being installed from outside the Microsoft Store without the needed permissions.

A few things you can try:

  1. Enable “Developer Mode” temporarily
    Go to Settings → Privacy & security → For developers and turn on Developer Mode, then try installing Collabora Office again.

  2. Check Windows Defender SmartScreen
    Sometimes SmartScreen blocks the installer silently.
    Go to Windows Security → App & browser control → Reputation-based protection and temporarily disable Check apps and files.
    After installing, you can turn it back on.

  3. Install using PowerShell (bypasses some UI restrictions)
    Right-click Start → Windows Terminal (Admin) and run:

    Add-AppxPackage "C:\path\to\collaboraoffice.msix"

    Make sure the filename and path match your downloaded file.

  4. Ensure previous version is fully removed
    If an older MSIX/APPX version exists, it may conflict.
    Go to Settings → Apps → Installed apps and remove any “Collabora Office” entries first.

  5. Check that your disk is not in “controlled folder access” mode
    If enabled, Windows blocks installers writing to Program Files.
    Go to Windows Security → Virus & threat protection → Manage ransomware protection and turn off Controlled folder access temporarily.

@Luigi we also have a public Matrix channel where you can discuss the issue and get answers quickly, since many community members and developers are active there. https://app.element.io/?updated=1.11.111#/room/#cool-dev:matrix.org

thanks
Darshan

3

thanks Darshan. I’ll try the solutions.

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