Проблема установки Teams на Windows 1909 18363.2039

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Проблема установки Teams на Windows 1909 18363.2039

Daniil Derianin 0

Good afternoon, after the last update, it has become impossible to install this software on a PC with Windows 10 OS, version 1909, build 18363.2039. This operating system is needed to run certain programs at the enterprise. Is there a way to fix this problem or install a previous version of Teams?

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Answer 1

Dear @Daniil Derianin

Thank you for posting your question in the Microsoft Q&A forum.

Based on your description, you’re running into a Teams installation issue on Windows 10 version 1909 (build 18363.2039) after the latest update, and you need this OS for enterprise apps

Kindly noted:

Even if you install an older Teams version, it may auto-update and break again because Teams updates independently of Windows.
If your enterprise apps require 1909, consider running Teams in a VDI environment or using the web version as a fallback.

In the meantime, here are some suggestions you can try:

1. Run Pre-Install Check Script

Microsoft provides a script to detect policy issues before installing the new Teams client. It checks registry keys and permissions. If keys like AllowAllTrustedApps are disabled, installation will fail. Adjust them to “Not Configured” in Local Group Policy Editor:

Computer Configuration > Administrative Templates > Windows Components > App Package Deployment.
Reference link Resolve the new Teams client installation issues

2. Try These Quick Fixes

Run Installer as Administrator: Right-click the setup file → Run as administrator.
Disable Antivirus Temporarily: Some AV tools block MSIX installs. Turn off protection briefly during installation.
Clear Old Teams Cache: Remove %AppData%\Microsoft\Teams and retry.
Use MSIX Version from Microsoft Store: This bypasses some installer issues, but may not work on LTSC or very old builds

3. Upgrade OS (Recommended)

If possible, update to Upgrade OS (Recommended) If possible, update to Windows 10 21H2 or later. Microsoft’s latest Teams client is optimized for supported builds, and older versions may stop working soon. Microsoft’s latest Teams client is optimized for supported builds, and older versions may stop working soon.

As a forum moderator with a limited scope of knowledge, I hope you find my answer helpful. Please know that I've done my best to assist you.

Thank you for your kindness and understanding. If you need anything else, please feel free to contact me.

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Darren-Ng 12,775 Баллы репутации Внешний персонал Microsoft Модератор

2025-09-03T03:37:32.99+00:00

Dear @Daniil Derianin

Just checking in to see if the above information was helpful. If you have any further updates on this issue, please feel free to post back. If you think my reply is helpful to you, please remember to mark it as an answer. Warm thanks.
Darren-Ng 12,775 Баллы репутации Внешний персонал Microsoft Модератор

2025-09-06T23:18:15.4166667+00:00

Dear @Daniil Derianin

I hope this message finds you well.

This is my second follow-up to check whether your issue has been resolved. I truly want to ensure your experience is as smooth as possible. If your problem is still ongoing or if you have faced any new difficulties, please share more details about the current steps you are stuck on. I am here and happy to provide further help whenever you need it.

While waiting for your response, I will continue tracking other customer questions on the forum to ensure everyone receives timely support. If you have additional questions, please feel free to tag my name in your reply so I can assist you promptly and more personally.

Looking forward to hearing from you soon.