Avast IS dead on win10, cant start services or reinstall...

[REDACTED]

Greetings.

I have windows 10 on my PC andf it was fine utntil today when i noticed that avast is not working. I dont get any useful error reports in my event log regarding the service. But when i try to start the freshly downloaded installer i get this:

Code: [Select]

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Application Error" />
  <EventID Qualifiers="0">1000</EventID>
  <Level>2</Level>
  <Task>100</Task>
  <Keywords>0x80000000000000</Keywords>
  <TimeCreated SystemTime="2015-08-28T22:20:37.000000000Z" />
  <EventRecordID>4016</EventRecordID>
  <Channel>Application</Channel>
  <Computer>DESKTOP-70PENFB</Computer>
  <Security />
  </System>
- <EventData>
  <Data>instup.exe</Data>
  <Data>10.3.2225.1172</Data>
  <Data>55b66368</Data>
  <Data>KERNELBASE.dll</Data>
  <Data>10.0.10240.16384</Data>
  <Data>559f3b2a</Data>
  <Data>c06d007e</Data>
  <Data>000b3e28</Data>
  <Data>19c0</Data>
  <Data>01d0e1dfc3dc8087</Data>
  <Data>C:\Users\<myusername>\AppData\Local\Temp\_av_iup.tm~a03248\instup.exe</Data>
  <Data>C:\Windows\SYSTEM32\KERNELBASE.dll</Data>
  <Data>1d76c153-5a4b-4b8c-be0b-05fe76206662</Data>
  <Data />
  <Data />
  </EventData>
  </Event>
Have someone any idea what causing this? Thanks in advance for the help .

[Rednose]

Hi gearsofwarhu, welcome to the forum

Have you tried a repair of Avast :

1) Start - Control Panel - Add/Remove Programs - Avast! - Change.
2) Repair.
3) Follow the instructions.
4) Reboot.

Greetz, Red.

[REDACTED]

Yep, same error in event log...

/EDIT
I have installed avast on my second operating system(i have three on this machine, win7/win10/Linux Mint) and scanned the win10 system partition but it found nothing...

/EDIT2
"sfc /scannow" had no effect, i copied  over a working kernelbase.dll from my laptop(i run avast IS on that one too) but i get the same error ...

/EDIT3
The SHA512 checksum is identical on both systems for this dll....