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RB-CLIENT-001 · Published Aug 26, 2026

WorkSpaces Applications client installation fails with a .NET Framework requirement

Status
Resolution available
Severity
Medium
Affected clients
WorkSpaces Applications client on Windows PCs without the required .NET Framework
Last reviewed
2026-08-26
Known working configurations
Windows PC with internet access and .NET Framework 4.6.2 or later, Client version 1.1.156 with .NET Framework 4.7.2 or later

Symptoms

  • The Amazon WorkSpaces Applications client does not finish installing.
  • The installer reports that .NET Framework 4.6 is required.
  • Selecting Install results in an installation failed message.
  • Closing the message exits the WorkSpaces Applications client installer.

Affected clients

This issue affects subscribers installing the Amazon WorkSpaces Applications client on a Windows PC that does not already have the required version of .NET Framework and cannot download it during installation.

The client normally installs .NET Framework 4.6.2 when version 4.6.2 or later is not already present. This automatic installation cannot complete if the PC is not connected to the internet.

Known working configurations

  • A Windows PC connected to the internet with .NET Framework 4.6.2 or later installed.
  • WorkSpaces Applications client version 1.1.156 with .NET Framework 4.7.2 or later installed on the same PC.

Cause/status

Resolution available. The WorkSpaces Applications client requires .NET Framework on the local Windows PC. If the required framework is missing and the PC is offline, the client installer cannot download and install the dependency.

The message may refer to .NET Framework 4.6, but you should install .NET Framework 4.6.2 or later. Client version 1.1.156 specifically requires .NET Framework 4.7.2 or later.

This is a local client installation issue. It does not indicate a problem with your Remote Browser subscription or remote session.

Resolution

  1. Connect the Windows PC on which you want to install the WorkSpaces Applications client to the internet.
  2. Download and install .NET Framework 4.6.2 or later on that PC.
  3. If you are installing WorkSpaces Applications client version 1.1.156, install .NET Framework 4.7.2 or later instead.
  4. Restart the PC if the .NET Framework installer asks you to do so.
  5. Run the WorkSpaces Applications client installer again.
  6. After installation completes, use the client to launch your Remote Browser session.

Only download .NET Framework from Microsoft or another source approved by your organisation.

Troubleshooting

  1. Confirm that the Windows PC can access the internet before starting the installation again.
  2. Check that the required .NET Framework installation completed successfully.
  3. Confirm the WorkSpaces Applications client version. Version 1.1.156 requires .NET Framework 4.7.2 or later.
  4. If software installation is managed by your organisation, ask your IT administrator to install or approve the required .NET Framework version.
  5. If the client still does not install, contact SafeJAM Support with the Windows version, WorkSpaces Applications client version, installed .NET Framework version, and the full error message. Do not send passwords or other sensitive information.

For further technical detail, see Amazon's WorkSpaces Applications user troubleshooting guidance.

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