Windows 10 | Point and Print printer installation prompt UAC

Jonathan LefebvreWINDOWS 107 Comments

We came across a strange issue today on Windows 10 devices that we haven’t seen since the Windows Vista days. Users has started to get prompts for User Account Control(UAC) when connecting to some printers. The Point and Print feature is responible for this as it easily allow standard users to install printer drivers from trusted print server.

The problem appeared right after applying last July monthly updates. (MS16-087)

Description
This security update resolves vulnerabilities in Microsoft Windows. The more severe of the vulnerabilities could allow remote code execution if an attacker is able to execute a man-in-the-middle (MiTM) attack on a workstation or print server, or set up a rogue print server on a target network.

Windows 10 Point Print UAC Prompt Cause

Microsoft as tightened the requirement for printer drivers on print servers.

If you :

Following MS16-087 installation, you receive a UAC prompt and a Connect to Printer error after a printer installation attempt. (A policy is in effect on your computer which prevents you from connecting to this print queue. Please contact your system Administaor)

Windows 10 point print UACWindows 10 point print UAC

Here’s the list of the specific KB per OS that create the issue :

  • KB3163912
    •  Windows 10
  • KB3172985
    • Windows 10 v1511
  • KB3170455
    • Windows Vista
    • Windows 7
    • Windows 8.1
    • Windows Server 2008
    • Windows Server 2008 R2
    • Windows Server 2012
    • Windows Server 2012 R2

How to fix it

Part 1

Part 1 of the solution is available in the October 2016 Preview of Monthly Quality Rollup available for all operating system except Windows 10 (October 16th). Microsoft has released an update that lets network administrators configure policies that permit the installation of print drivers that they consider are safe. This update also allows  network administrators to deploy printer connections that they consider safe.

Note
If you are not familiar with preview updates, take a look at the following blog post.

This mean, if you are facing the issue, the official fix for it will be available for production use on the next Patch Tuesday (November 8th) as part of the Monthly Quality Rollup.

Important
**Update 2016/11/10** Microsoft as released an update that was in preview in Octobre 2016. KB3197868 https://support.microsoft.com/en-ca/kb/3197868 After testing, it’s working as excepted. The second GPO part still required to make this work.

KB in preview

For Windows 7 and Windows Server 2008 R2 : https://support.microsoft.com/en-ca/kb/3192403

For Windows Server 2012 : https://support.microsoft.com/en-ca/kb/3192406

For Windows 8.1 and Windows Server 2012 R2 : https://support.microsoft.com/en-ca/kb/3192404

KB in production

For Windows 10 RTM : https://support.microsoft.com/en-ca/kb/3192440

For Windows 10 1511 : https://support.microsoft.com/en-ca/kb/3192441

Part 2

Part 2 consist having the right GPO settings for Point and Print.

Two GPO settings must be applied :

  • Under Computer Configuration / Policies / Administrative Templates / Printers, set Package Point and Print – Approved server to Enabled
    • Each print server must be added to the list with the fully qualified server name

Windows 10 point print UAC

  • Under Computer Configuration / Policies / Administrative Templates / Printers, set  Point and Print Restrictions to Enabled
    • Each print server must be added to the list with the fully qualified server name, seperated by semi-colons
    • When installing driver for new connection, select Do not show warning or elevation prompt
    • When installing driver for existing connection, select Do not show warning or elevation prompt

Windows 10 point print UAC

 

Contributor of System Center Dudes. Based in Montreal, Canada, Senior Microsoft SCCM consultant, working in the industry for more than 10 years. He developed a strong knowledge of SCCM and MDT to build automated OS deployment solution for clients, managed large and complexe environment, including Point of Sale (POS) related projects.
Windows 10 | Point and Print printer installation prompt UAC
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7 Comments on “Windows 10 | Point and Print printer installation prompt UAC”

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  6. After some testing this does in fact work. What doesn’t make a whole lot of sense and i’m tired so i’m not going to push much further, is that when I seperate 2 GPO’s (1 for computer = this one, and then 1 for Users = printer deployment) it doesn’t work. When I put these 2 together it does work. Working is working, so good enough for now. Thanks for your notes here

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