Regardless of the cause, we’ve compiled several proven methods to resolve this issue. Follow the steps below to troubleshoot the problem.
1. Disable Third-Party Antivirus Temporarily
Antivirus programs are designed to block viruses and potential threats to your computer. However, they can sometimes mistakenly flag legitimate installations as suspicious, preventing them from completing. Temporarily disabling your antivirus software can stop them from interfering with the installation process, allowing the Microsoft Teams setup to proceed without being blocked. After completing the installation, ensure you re-enable your antivirus protection immediately to keep your system secure.
2. Run Installer as Administrator
Windows restricts installers from modifying system files or performing certain actions without proper permissions for security reasons. By running the Microsoft Teams installer as an administrator, you grant it the necessary privileges to create directories, install dependencies, and modify the registry without being blocked by system restrictions.
3. Use the MS Teams MSIX Version
The MSIX Version from the Microsoft Store provides an alternative installation method that bypasses common setup issues. This version is particularly useful if the standard installer fails. The MSIX package includes built-in security and dependency management, which helps reduce conflicts with antivirus software, missing system components, and permission restrictions. Note: This method may not work on certain Windows versions, such as the LTSC (Long-Term Servicing Channel) edition of Windows 10. However, it should work seamlessly on other Windows versions.
4. Clean Previous Installations
Residual files from previous or failed installations of Microsoft Teams can cause conflicts, preventing the new installation from completing successfully. These leftover files are often stored in directories like SquirrelTemp or as registry entries, which can interfere with the setup process. Removing these files can help resolve permission issues, eliminate potential corruption, and clear conflicting system paths. Uninstall Microsoft Team Delete Leftover Files
5. Perform a Clean Boot
The installation of Microsoft Teams can fail if third-party services or background applications interfere with the process. Performing a clean boot starts Windows with only essential services and drivers, eliminating potential software conflicts and allowing the installation to proceed smoothly.
