Windows 7 Updates destroy MBR

[Soter]

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

 

[NoelDP]

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There was an issue with the original release version of KB3004394 - which was withdrawn within 24 hours, and has since been updated and re-released.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.

 

[jumanji]

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.





Everything went on well and nothing untoward happened.

 

[Soter]

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There was an issue with the original release version of KB3004394 - which was withdrawn within 24 hours, and has since been updated and re-released.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.

 

[NoelDP]

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.

 

[Soter]

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

 

[NoelDP]

One app is never enough in these circumstances.