What Is kb-3138612? | Plus 4 Fixes For Slow Update Issues

A while back, Microsoft rolled out some updates to Windows 7 which negatively affected the speed of updating in all Windows 7 system.

Particularly the issue was with the lengthy update times that typically took hours, or indefinitely, for some users.

Many users have tried various ways to resolve the issue such as stopping and restarting this Windows Update service, restarting their computer, and running a check of the system files.

If you’ve had similar issues on you Windows 7 computer, you are able to fix it with the installation of the kb-3138612 update.

What Is The kb-3138612 Update?


The kb-3138612 is a Windows Update Client for Windows 7 it was released on March 26, 2016 ( Source).

This patch aims to improve the update speed on Windows 7. It’s basically the KB3135445 patch that included some enhancements.

In the end, Microsoft didn’t exactly specify the changes made not even on its Knowledge Base article.

The update also brings few enhancements for it’s Windows Update Client in both Windows Server 2008 R2 SP1 and Windows 7 SP1.

Before you are able to install this update, you must apply Service Pack 1. Service Pack 1 for either Windows Server 2008 R2 or Windows 7.

How To Fix Slow Update Times On Windows 7

If you’re struggling with an extended update time for the Windows 7 computer, then these fixes could aid in resolving your issue.

1st Fix (Check the Updates)

Before you download the patches, it is necessary verify if they’re already installed on your system.

  1. Go to your Control Panel by clicking the Start button and looking for Control Panel on the menu.
  2. In your Control Panel, go to System Security then View installed updates.
  3. Click the Microsoft Windows option and look for “Update for Microsoft Windows (KB3145739)” and “Update for Microsoft Windows kb-3138612). If they’re not there, proceed to the 2nd fix.

2nd Fix (Install Updates kb-3138612 and KB3145739)

The staff of on the Malwarebytes Forum suggested a solution to slow updates in Windows 7 by installing two updates manually on your computer.

  1. To perform the fix, you have to download then install either Chrome or Firefox.
  2. After that, download both the kb-3138612 and KB3145739
  3. After you’re done downloading, install the two updates into your system.
  4. Once you have successfully installed them, head over to the Control Panel which can be accessed by pressing the Start button and looking for Control Panel.
  5. Head to System and Security, Windows Update, then let your system scan for any updates and install them.

Before proceeding it is important to ensure that you have a language pack installed on your PC prior to installing these two. When you download them prior to the language pack, you’ll need to reinstall them.

3rd Fix (Uninstall the Patch)


While the kb-3138612 fix problems with long updates, the issue is that Microsoft did not specify exactly what issues it addresses and what enhancements it will provide. In light of these unidentified “improvements” many people Windows users were wary to believe Microsoft.

Many believe Microsoft is trying to convince customers into upgrading into Windows 10. But, because of Windows 10’s nascent performance in the past, many people were not ready to switch.

If you’re among those, you have the option to conceal the kb-3138612 patch, and either not install it, or remove it, if it’s already installed. To avoid issues related to patch issues, Information Week recommends that you remove patches you don’t require. This is a good idea to apply this update kb-3138612 upgrade if worried that you’ll be a victim of Microsoft gathering information about your system through this patch.

Here’s how to do it:

  1. Click the Start button then look for Control Panel. After that, go to Add or Remove Programs.
  2. Check the box near Show Updates.
  3. After that, scroll down towards the bottom then locate the kb-3138612 patch.
  4. Select it then click Remove.
  5. Once you’re done, simply restart your computer.

4th Fix (Disable Telemetry)

Because of the patch’s suspicious nature it is possible whether it’s one or more patches which allow telemetry or to prepare for the upgrading up to Windows 10. We’ve previously discussed how to prevent your PC from automatically updating into Windows 10, so let’s look at ways to stop telemetry this time.

A user of the community with the name of Phoenix recommends this method for deactivating the telemetry system:

  1. On your Windows 7 computer, install both Disable IE 10 and IE 11 blocker toolkits. These will prevent the updates from showing in Windows Updates. This is because if one installs them, the KB2670838 patch would be automatically installed. This can be rather annoying as it will mess with the AERO functionality and cause you to see blurry fonts when using your browser.
  2. After downloading, run both files then extract their contents to any folder. Check the Read Me file for further instructions.


The kb-3138612 patch is bundled to Windows Update which can help resolve the lengthy update times problem that is experienced by the majority of Windows 7 users. While it can resolve the issue by cutting the time to update by a few minutes instead of hours it could cause your PC to upgrade automatically into Windows 10.

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