Vista Update Crash

HI, I'm using Vista Home Premium 32 bit and I've not been able to check for
any updates for both windows update and windows defender, as the update
crashes everytime. There's no problems with my internet connection as I'm
able to surf perfectly fine. The error message that I got is:

Problem Event Name: BEX
Application Name: svchost.exe_wuauserv
Application Version: 6.0.6000.16386
Application Timestamp: 4549adc4
Fault Module Name: StackHash_6b64
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 058af90b
Exception Code: c0000005
Exception Data: badc0de1
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 1033
Additional Information 1: 6b64
Additional Information 2: 1cca4418e8e49d1df7656cce0f5fd2bb
Additional Information 3: 4ece
Additional Information 4: e778caf73f708feebe58169ae4ec9ff1

Hope someone can help cos I really do not want to re-install vista.