Applies to

  • Window Server 2016

Issue

.Net Framework 3.5 installation fails on Windows Server 2016

Troubleshooting

Tried many solutions like below

.NET 3.5 Uninstall detected

See: MIM 2016 Troubleshooting: The installation just hanging without error, warning, log, Event-log

Windows Feature installation

See: Windows Server 2012 R2 Troubleshooting: .NET Framework 3.5 installation failure (Offline/Online)

GPO Setting

See: .Net Framework 3.5 Troubleshooting: installation errors (GPO)

Hotfix issue

See: SharePoint 2013 Troubleshooting: NET 3.5 framework add feature error (the source files could not be found)

Solution

Grant read permission to the Everyone group on the installation files.
Check: https://docs.microsoft.com/en-us/windows-server/administration/server-manager/install-or-uninstall-roles-role-services-or-features 

 

Important

When you are installing feature files from a remote source, the source path or file share must grant Read permissions either to the Everyone group (not recommended for security reasons), or to the computer (local system) account of the destination server; granting user account access is not sufficient.

Servers that are in workgroups cannot access external file shares, even if the computer account for the workgroup server has Read permissions on the external share. Alternate source locations that work for workgroup servers include installation media, Windows Update, and VHD or WIM files that are stored on the local workgroup server.

See also

References