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Windows 7: NetBT.sys driver won#t load - EventID 7026

25 May 2011   #1

Windows 7 Home Premium 64bit
NetBT.sys driver won#t load - EventID 7026

Windows 7 Home Premium SP1 x64, all updates, SFC OK
Acer X3900


How can one repair or load the netbt.sys driver?

It seems that after an automatic Windows Update the netbt.sys
driver ceased to load. From that day mapping network drives
on an Windows 2000 PC stopped to work. The Win7 PC is also
invisible on the Windows network. Internet and Ping works though.

Strange thing is that System File Check (SFC) reports everything fine.

EventIDs 7026, 7001, 7001
Source: Service Control Manager

As a consequence the "TCP/IP-NetBIOS" Helper Service also fails to load.

Any hints would be highly appreciated.

My System SpecsSystem Spec

30 May 2011   #2

Windows 7 Home Premium 64bit

Anyone having an idea?

I have an older version of netbt.sys from a backup, but so far I could not find a method to re-install it.
Nor matter what I try (Save Mode, Recovery Console, privileged console) Win7 tells me I would not have
access rights to C:\Windows\System32\Drivers\...

What would be the standard procedure to be able to override netbt.sys with an older version?
My System SpecsSystem Spec
30 May 2011   #3
Microsoft MVP

Windows 7 Ultimate 32bit SP1

Are you using Norton/Symantec?
My System SpecsSystem Spec

31 May 2011   #4

Windows 7 Home Premium 64bit

No, Norton and McAffee are the first things scrubbed off the machine.
Windows Firewall and Avira Antivirus are disabled.
My System SpecsSystem Spec
01 Jun 2011   #5

Windows 7 Home Premium 64bit

The problem was finally solved by restoring from an older backup, while having some data loss.
Now - before and after 55 Windows 7 updaes - everything including Window Networking (Workgroup)
is working properly.
Very strange.
My System SpecsSystem Spec

 NetBT.sys driver won#t load - EventID 7026

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