Microsoft Teams Fails to Launch, Only a 16KB File is Created After Installation

Question

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I am encountering issues with Microsoft Teams installation and launch:

Installation Process:

• Used the offline installer or the online setup to install Microsoft Teams.
  • Logs indicate that the installation and package registration processes were successful, but the application fails to launch.
    • After installation, the folder contains only a 16KB executable file instead of the full Teams application.
    Log Details (Key Excerpt):

             less
             复制代码
             2024-12-30
    

    Solutions Tried:

    - Uninstalled all Teams-related components, including the Teams Machine-Wide Installer.
    
       - Deleted related folders and registry entries.
    
          - Reinstalled using the latest offline installer (MSI file downloaded from the official website).
    
             - Temporarily disabled firewall and antivirus software.
    
                - Checked the network to ensure no URLs required for installation are blocked.
    
                **Environment Information**:
    
                   - Operating System: Windows Server 2022, Build 20348.
    
                      - Installer Version: 1.7.00.19353.
    
                         - Teams Machine-Wide Installer: Version 1.7.0.33761 (file size: 146 MB).
    

Issue: Despite successful installation, Teams fails to launch. How can I resolve this issue? Could you provide detailed steps or a fix for this problem?

Thank you for your assistance!

Answer 1

Hi Cruise,

Pls apply the below methods to resolve your Teams issue:

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1. Clean Uninstall Teams

• Uninstall Microsoft Teams and Teams Machine-Wide Installer via Control Panel > Programs.
• Delete leftover files from:

%LocalAppData%\Microsoft\Teams
%ProgramData%\Microsoft\Teams

• Remove Teams registry entries:

HKEY_CURRENT_USER\Software\Microsoft\Office\Teams

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2. Reinstall Teams

• Download the latest installer from Microsoft’s website.
• Install Teams Machine-Wide Installer first with admin rights, then install Teams.

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3. Fix Potential Issues

• Check the network to ensure no Teams-related URLs are blocked.
• Run the installer as an administrator and log installation errors using:

msiexec /i Teams_windows_x64.msi /l*v install.log

• Update Windows Server, .NET Framework, and Visual C++ Redistributables.

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4. Check System Policies

• Ensure no Group Policies (like AppLocker) are blocking Teams.

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5. Try Alternative Steps

• Create a new local user profile and install Teams there.
• Use PowerShell to install Teams:

Install-Package -Name MicrosoftTeams -Force

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If the issue persists, contact Microsoft Support with logs and error details.Here’s a shorter, simpler version to resolve the issue:

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1. Clean Uninstall Teams

• Uninstall Microsoft Teams and Teams Machine-Wide Installer via Control Panel > Programs.
• Delete leftover files from:

%LocalAppData%\Microsoft\Teams
%ProgramData%\Microsoft\Teams

• Remove Teams registry entries:

HKEY_CURRENT_USER\Software\Microsoft\Office\Teams

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2. Reinstall Teams

• Download the latest installer from Microsoft’s website.
• Install Teams Machine-Wide Installer first with admin rights, then install Teams.

---

3. Fix Potential Issues

• Check the network to ensure no Teams-related URLs are blocked.
• Run the installer as an administrator and log installation errors using:

msiexec /i Teams_windows_x64.msi /l*v install.log

• Update Windows Server, .NET Framework, and Visual C++ Redistributables.

---

4. Check System Policies

• Ensure no Group Policies (like AppLocker) are blocking Teams.

---

5. Try Alternative Steps

• Create a new local user profile and install Teams there.
• Use PowerShell to install Teams:

Install-Package -Name MicrosoftTeams -Force

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If the issue persists, contact Microsoft Support with logs and error details.

Answer 2

Hi @cruise

According to your case description, you are deploying the new Teams in Windows Server 2022.

Learn more at Bulk deploy the new Microsoft Teams desktop client.

Using the teamsbootstrapper.exe -p command always guarantees the latest new Teams client is installed.

A phased and controlled rollout can then be achieved by selectively expanding the new computer catalogue/delivery group assignments to more users.

Admins can also use a local teams MSIX to provision new Teams. This option minimizes the amount of bandwidth used for the initial installation. The MSIX can exist in a local path or UNC.

1. Download the .exe installer..
2. Download the MSIX: - MSIX x86 - MSIX x64 - ARM64.
3. Open the Command Prompt as an Admin.
4. Depending on where your MSIX is located, do the following steps:

For local path, enter: .\teamsbootstrapper.exe -p -o "c:\path\to\teams.msix"

Example:

For UNC, enter: .\teamsbootstrapper.exe -p -o "\unc\path\to\teams.msix"

Example:

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