If you are getting this error when trying to login to Microsoft 365 Apps, this fix might help. The error says “Your computer’s Trusted Platform Module has malfunctioned. Error Code 80090034.

To fix that, configured this registry key/value:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb

DWORD Protectionpolicy 1

The value 1 indicates a specific setting, but without direct documentation from Microsoft, the precise effect of 1 on this policy isn’t readily available. It typically refers to enabling or enforcing a particular cryptographic protection policy, possibly related to password protection or other cryptographic functions in Windows.

This was tested on Windows 10.

This Monday, 13th of January 2025 was a bad day for sysadmins. Outlook and other Microsoft 365 / Office Apps would crash upon start because of a new update pushed by Microsoft. The message says something about react-navis-win32.dll missing. The only fix is to install the December 2024 Updates to fix the issue.

This configuration XML File install the December 2024 updates. Beware: This configuration is for Windows Server 2016 RDS and note that automatic updates are disabled.

<Configuration ID="e2abcd00-6229-40cc-be2d-e3a8ff5efb34">
  <Add OfficeClientEdition="32" Channel="Broad">
    <Product ID="O365BusinessRetail">
      <Language ID="de-de" />
      <Version ID="16.0.17328.20670"/>
      <ExcludeApp ID="Groove" />
      <ExcludeApp ID="Lync" />
      <ExcludeApp ID="OneDrive" />
      <ExcludeApp ID="Teams" />
    </Product>
  </Add>
  <Property Name="SharedComputerLicensing" Value="1" />
  <Property Name="SCLCacheOverride" Value="0" />
  <Property Name="AUTOACTIVATE" Value="0" />
  <Property Name="FORCEAPPSHUTDOWN" Value="FALSE" />
  <Property Name="DeviceBasedLicensing" Value="0" />
  <Updates Enabled="FALSE" />
  <RemoveMSI />
  <Display Level="None" AcceptEULA="TRUE" />
</Configuration>

To download data hit setup.exe /download configuration.xml

To install execute setup.exe /configure configuration.xml

References:

https://borncity.com/win/2025/01/13/microsoft-outlook-365-or-other-ms-365-apps-are-dropping-suddenly-errors/