Error 0000002e or 80070035 displayed in the console when protecting computers

Symptom
In the console the following errors are shown:


• 0000002e
• 80070035
• Could not start installation program on the computer. The network path was not found.
• The installation did not start. The computer may have been shut down, renamed or disconnected, or a required service may not be running. It may be running Windows XP Home or Windows Vista, or Windows 2008.
  

Known to apply to the following Sophos product(s) and version(s)
Enterprise Console 4.7.0
Enterprise Console 4.7.1
Enterprise Console 4.5.0
Enterprise Console 4.5.1
Enterprise Console 4.0.0
Sophos Enterprise Manager 4.7.0
Sophos Control Center 4.0.1
Sophos Control Center 4.1

Cause
The client computer:

• Is switched off or not currently joined to the network.
• The operating system of the remote computer is not supported.
  
• There is a firewall blocking the installation process.
• Has not been correctly prepared for remote installation of endpoint software.

What to do

1. Ensure the computer is switched on and correctly connected to the network.
2. Check the computer's operating system and specification is supported for the product you are attempted to install: System Requirements
3. Confirm all of the requirements for deploying Sophos endpoint software to a computer have been met.  For more information please see:
• How to locally configure computers to ensure that you can protect and manage computers with endpoint software centrally
• How to configure a GPO to ensure that you can protect and manage computers with endpoint software
  

After the above checks have been completed successfully protect the client computer(s) again.