Avg free av installation problem

Other products
3

Amol, Do you have or have you had any other anti-virus, such as McAfee, installed on your system?. 
AVG Guru

1

when tied to install avg free av 
i am having following error
Error code:0xC0070643
Description:Event exec_finishe

 
please help me 
i lost my real protection 
i am waiting

2

Amol, Do you have or have you had any other anti-virus, such as McAfee, installed on your system?. 
AVG Guru