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Updated July 4, 2016
You may encounter the following error when attempting to upgrade/install NPM 12.
Error while trying to install the .NET Framework 4.5. The installer returned the following error message:
Your SolarWinds installation can not continue because Windows Installer 3.1 is not installed on this computer. Run a Windows Update to install an updated Windows Installer, and then restart this SolarWinds installer after completing the Windows Installer update.
This is caused by a Windows level event wherein the .NET Framework cannot be installed due to lack of the proper Windows installer. This is an environmental issue with the Windows Server OS itself and as long as SolarWinds detects that .NET Framework 4.5 is installed, the condition leading to this error will be eliminated. The NPM 12 hardware/software prerequisites can be found in NPM 12.0 system requirements.
This can occur despite the Windows Installer 5.0 being installed.
Install the .NET Framework manually. Refer to hInstalling the .NET Framework © 2016 Microsoft, available at https://msdn.microsoft.com/en-us/lib...v=vs.110).aspx, obtained on July 1, 2016.
If this does not help, please consult your Windows Server team for assistance with installing .NET Framework 4.5.
Disclaimer: Please note, any content posted herein is provided as a suggestion or recommendation to you for your internal use. This is not part of the SolarWinds software or documentation that you purchased from SolarWinds, and the information set forth herein may come from third parties. Your organization should internally review and assess to what extent, if any, such custom scripts or recommendations will be incorporated into your environment. You elect to use third party content at your own risk, and you will be solely responsible for the incorporation of the same, if any.