Avira

Hi!

If you're getting errors during the update (like the error 537) you're likely redirected by our CDN which is needed to handel the high traffic in your region.

In this case you have to edit you're "hosts" file in the Windows filesystem.

Open the Explorer and go to C:\Windows\System32\drivers\etc\
Edit the "hosts" file and add the following lines below

#   127.0.0.1       localhost
#   ::1             localhost

We prepared 3 lists for you, choose the one for the product you have installed.

Professional/Server:

80.190.143.249 dl1.avgate.net
80.190.143.249 dl2.avgate.net
80.190.143.249 dl3.avgate.net
80.190.143.249 dl4.avgate.net
80.190.143.249 dl5.avgate.net
80.190.143.249 dl6.avgate.net
80.190.143.249 dl.antivir.de
80.190.143.249 dl1.pro.antivir.de
80.190.143.249 dl3.pro.antivir.de
80.190.143.249 dl4.pro.antivir.de
80.190.143.249 dl1.antivir.net
80.190.143.249 dl2.antivir.net
80.190.143.249 dl3.antivir.net
80.190.143.249 dl4.antivir.net
80.190.143.249 dl1.antivir-pe.de
80.190.143.249 dl2.antivir-pe.de
80.190.143.249 dl3.antivir-pe.de
80.190.143.249 dl4.antivir-pe.de
80.190.143.249 professional.avira-update.com
80.190.143.249 professional.avira-update.net
80.190.143.249 personal.avira-update.com

Premium / Premium Security Suite

80.190.143.247 dl1.avgate.net
80.190.143.247 dl2.avgate.net
80.190.143.247 dl3.avgate.net
80.190.143.247 dl4.avgate.net
80.190.143.247 dl5.avgate.net
80.190.143.247 dl6.avgate.net
80.190.143.247 dl.antivir.de
80.190.143.247 dl1.pro.antivir.de
80.190.143.247 dl3.pro.antivir.de
80.190.143.247 dl4.pro.antivir.de
80.190.143.247 dl1.antivir.net
80.190.143.247 dl2.antivir.net
80.190.143.247 dl3.antivir.net
80.190.143.247 dl4.antivir.net
80.190.143.247 dl1.antivir-pe.de
80.190.143.247 dl2.antivir-pe.de
80.190.143.247 dl3.antivir-pe.de
80.190.143.247 dl4.antivir-pe.de
80.190.143.247 professional.avira-update.com
80.190.143.247 professional.avira-update.net
80.190.143.247 personal.avira-update.com

Personal (Classic)

80.190.143.245 dl1.avgate.net
80.190.143.245 dl2.avgate.net
80.190.143.245 dl3.avgate.net
80.190.143.245 dl4.avgate.net
80.190.143.245 dl5.avgate.net
80.190.143.245 dl6.avgate.net
80.190.143.245 dl.antivir.de
80.190.143.245 dl1.pro.antivir.de
80.190.143.245 dl3.pro.antivir.de
80.190.143.245 dl4.pro.antivir.de
80.190.143.245 dl1.antivir.net
80.190.143.245 dl2.antivir.net
80.190.143.245 dl3.antivir.net
80.190.143.245 dl4.antivir.net
80.190.143.245 dl1.antivir-pe.de
80.190.143.245 dl2.antivir-pe.de
80.190.143.245 dl3.antivir-pe.de
80.190.143.245 dl4.antivir-pe.de
80.190.143.245 professional.avira-update.com
80.190.143.245 professional.avira-update.net
80.190.143.245 personal.avira-update.com