Mozilla Thunderbird Beta (MSIX)

by Mozillav148.0.6

Last updated Jul 27, 2026

A free and open source email, newsfeed, chat, and calendaring client that is easy to set up.

Install with winget

$ winget install --id Mozilla.Thunderbird.Beta.MSIX --exact --version 148.0.6

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

Silent install command for Mozilla Thunderbird Beta (MSIX)

Mozilla Thunderbird Beta (MSIX) uses MSIX. The silent install switches are (no switches needed).

One-line silent install (x64)

Add-AppxPackage -Path .\Thunderbird%20Setup%20148.0b6.msix

See the full silent install reference for Mozilla Thunderbird Beta (MSIX) →

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Installers · v148.0.6

Architecture	Type	Scope	Install	Download
x64	MSIX	-		Direct

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

Security

25 known CVEs via NVD

critical9.8Fix in v153.0CVE-2026-16410affects before 153.0Jul 21, 2026
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
high7.5Fix in v153.0CVE-2026-16409affects before 153.0Jul 21, 2026
Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
critical9.8Fix in v153.0CVE-2026-16407affects before 153.0Jul 21, 2026
Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
medium6.5Fix in v153.0CVE-2026-16403affects before 153.0Jul 21, 2026
Spoofing issue in the Address Bar component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
critical9.8Fix in v153.0CVE-2026-16402affects before 153.0Jul 21, 2026
Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
high8.8Fix in v153.0CVE-2026-16401affects before 153.0Jul 21, 2026
Privilege escalation in the Data Loss Prevention component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
high7.5Fix in v153.0CVE-2026-16400affects before 153.0Jul 21, 2026
Information disclosure in the DOM: Security component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory
high7.5Fix in v153.0CVE-2026-16399affects before 153.0Jul 21, 2026
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Vendor advisory

Showing 8 of 25. Source: NVD, updated 3h ago. Patch status is best-effort: NVD's fix version is compared against the latest version in winget, but the two version formats don't always align. Confirm with the vendor advisory before treating any specific build as safe.

See a CVE that affects your fleet? Push the patched version to Intune in one click with Pckgr - automated patching is the only way to keep up.

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More from Mozilla or browse calendar, elementio, email.

Frequently asked questions

How do I install Mozilla Thunderbird Beta (MSIX) on Windows?

Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id Mozilla.Thunderbird.Beta.MSIX --exact --version 148.0.6. winget downloads the installer from Mozilla and runs it. Requires Windows 10 (1809+) or Windows 11.

How do I install Mozilla Thunderbird Beta (MSIX) silently for unattended deployment?

Add --silent and accept the agreements upfront: winget install --id Mozilla.Thunderbird.Beta.MSIX --exact 148.0.6 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.

What are the silent install switches for Mozilla Thunderbird Beta (MSIX)?

Mozilla Thunderbird Beta (MSIX) uses MSIX. MSIX packages install silently by default - no switches are needed (Add-AppxPackage -Path .\Thunderbird%20Setup%20148.0b6.msix).

How do I uninstall Mozilla Thunderbird Beta (MSIX) via winget?

Run: winget uninstall --id Mozilla.Thunderbird.Beta.MSIX --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from Mozilla Thunderbird Beta (MSIX)'s Apps & Features entry.

Is Mozilla Thunderbird Beta (MSIX) free?

Mozilla Thunderbird Beta (MSIX) is distributed under MPL-2.0. Refer to the publisher (https://support.mozilla.org/kb/thunderbird-beta) for the full license terms - Wingetly itself does not charge for installation.

Does Mozilla Thunderbird Beta (MSIX) work on Windows 10?

Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls Mozilla Thunderbird Beta (MSIX) directly from the publisher.

How do I keep Mozilla Thunderbird Beta (MSIX) up to date?

Run winget upgrade --id Mozilla.Thunderbird.Beta.MSIX --exact, or winget upgrade --all to update everything winget tracks. We index 1 version of Mozilla Thunderbird Beta (MSIX) from microsoft/winget-pkgs.