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Windows 7: Windows 7 Updates destroy MBR

28 Feb 2015   #1
Soter

Windows 7 32 bit
 
 
Windows 7 Updates destroy MBR

After a lot of tests it is obvious that at least one of the latest following Windows 7 updates destroys the MBR of the Hard Drive. It is up to Microsoft to help make explanations and to withdraw it.
KB890830
KB915597
KB3013455
KB3023562
KB2952664
KB3004394
KB3006137
KB3021917



My System SpecsSystem Spec
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28 Feb 2015   #2
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

None of the updates are designed to affect the MBR so far as I know - and the only one that may do so is KB890830 - the MSRT, which may attempt to remove MBR malware if it finds any present. KB915597 are simply Defender updates - but are also involved in removing malware

There was an issue with the original release version of KB3004394 - which was withdrawn within 24 hours, and has since been updated and re-released. However, there was no mention of MBR problems in any of the dozens/hundreds of reports I have read.
My System SpecsSystem Spec
28 Feb 2015   #3
jumanji

Windows 7 Home Premium 32 bit
 
 

My wife updated her Windows 7 Home Premium 32bit on her Zotac Mini-PC about a week back. I updated my Windows 7 Ultimate 32bit just now.

The following Important and optional updates were available.

Windows 7 Updates destroy MBR-28-02-2015-18-29-15.jpg

Windows 7 Updates destroy MBR-28-02-2015-18-30-24.jpg

Everything went on well and nothing untoward happened.


My System SpecsSystem Spec
.

28 Feb 2015   #4
Soter

Windows 7 32 bit
 
 

Quote   Quote: Originally Posted by NoelDP View Post
None of the updates are designed to affect the MBR so far as I know - and the only one that may do so is KB890830 - the MSRT, which may attempt to remove MBR malware if it finds any present. KB915597 are simply Defender updates - but are also involved in removing malware

There was an issue with the original release version of KB3004394 - which was withdrawn within 24 hours, and has since been updated and re-released. However, there was no mention of MBR problems in any of the dozens/hundreds of reports I have read.
That's why I just said one of them. As a matter of fact my MBR destroyed after the installation of the above updates as a whole. I'm glad to hear that the "KB890830" most probably did the dirty job.
In any case, thank you for your help.
My System SpecsSystem Spec
01 Mar 2015   #5
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

If indeed the MSRT is responsible, it's ONLY because the machine was already infected with MBR malware.
You should chec it our thoroughly with a variety of virus/malware scanners.
My System SpecsSystem Spec
01 Mar 2015   #6
Soter

Windows 7 32 bit
 
 

Quote   Quote: Originally Posted by NoelDP View Post
If indeed the MSRT is responsible, it's ONLY because the machine was already infected with MBR malware.
You should chec it our thoroughly with a variety of virus/malware scanners.
I had already checked it with Kaspersky I.S.
Thank you
My System SpecsSystem Spec
01 Mar 2015   #7
NoelDP

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
 
 

One app is never enough in these circumstances.
My System SpecsSystem Spec
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 Windows 7 Updates destroy MBR




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