Windows 10 Version 1607 driver signing changes

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BoraMurdar

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Windows 10 Version 1607 driver signing changes - gHacks Tech News

Microsoft announced recently that the upcoming version 1607 of Windows 10, known as the Anniversary Update, will only load kernel mode drivers that are digitally signed by Microsoft.

The change won't affect all systems however the company notes, as only new installations are affected in the beginning.

Starting with new installations of Windows 10, version 1607, the previously defined driver signing rules will be enforced by the Operating System, and Windows 10, version 1607 will not load any new kernel mode drivers which are not signed by the Dev Portal.

The list of exceptions to the new policy is long. Below is the most important information in regards to the new kernel mode drivers policy:

  1. PCs upgraded to Windows 10 Build 1607 from a previous version of Windows (for instance Windows 10 version 1511) are not affected by the change.
  2. PCs without Secure Boot functionality, or Secure Boot off, are not affected either.
  3. All drivers signed with cross-signing certificates that were issued prior to July 29, 2015 will continue to work.
  4. Boot drivers won't be blocked to prevent systems from failing to boot. They will be removed by the Program Compatibility Assistant however.
  5. The change affects only Windows 10 Version 1607. All previous versions of Windows are not affected.
Microsoft notes that the change is done to make Windows more secure for end-users.

We’re making these changes to help make Windows more secure. These changes limit the risk of an end-user system being compromised by malicious driver software.

While the company states that certain setups won't be affected by the change, it appears that at least some of these exceptions will only be temporary.

As mentioned previously, boot drivers won't be blocked outright according to Microsoft. The company states however that Windows will eventually block boot drivers.

Microsoft mentions further that it "starts with" new installations of Windows 10 which suggests that it plans to remove some or even all of the exceptions in the future.

Impact
driver-radar-pro-interface.png


Kernel mode drivers are used by various programs on Windows. The list includes various security and backup programs, or VPN applications to name a few.

Any kernel mode driver not signed by Microsoft won't run anymore on new installations of Windows provided that the exceptions listed above don't apply.

This in turn makes the program non-functioning that relies on the driver.

While Windows 10 users may be affected by the change, so are developers. Companies may have enough funds to get the required certificates to get their drivers signed by Microsoft, but the same may not be true for hobby programmers or one-man teams.

The move will limit malicious kernel mode drivers on the other hand as well.
 
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Ehhhh... this is already causing some users who participate in the Insider program some problems.

Some Insiders are suggesting others disable SecureBoot once the AU is installed.

This makes no sense. It is ludicrous to install an update that requires a user to disable one of W10's primary protections - SecureBoot - so that their softs work.

It is better security-wise to not install AU and keep the system as-is with SecureBoot enabled.

As for myself, I have disabled Windows Update service until AU is proven not to smash W10...
 

DJ Panda

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Can't wait for the update. Hopefully I will get lucky and nothing will be ruined. I don't know what I was thinking the first week W10 came out. I installed it, hated it, went back, installed it, went back, installed it again, but instead of going to my original win 8.1 I attempted to go to 7 and bricked my computer. I was an idiot. I should have stayed the first time, got used to it. Then I wouldn't have had it buy a new computer until a long time. :(
 
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