Avast will cause many other problems with HM2 other than this and we can not recommend you use Avast with HM2.
Which Operating System, Firewall, and Anti-Virus are you using?
Many of those free Norton, Mcaffee, Comodo, Zonealarm, Avira, Avast, AVG, Bitdefender, etc, 'internet security' bundles will not work well with Holdem Manager.
Please do the following steps, so we can get your computer to a state that we know will work with Holdem Manager:
1) Uninstall any 3rd party security software bundles.
2) Reboot your computer
3) Please install the latest version: http://www.holdemmanager.com/downloa...ger_2_Beta.exe
4) Enable Windows Firewall's recommended settings through your Control Panel, turn off Windows Defender, and add firewall exceptions for HM and SQL - http://hm2faq.holdemmanager.com/ques...rewall%29#MSES
5) Install Microsoft Security Essentials for antivirus/malware protection and update it - Microsoft Security Essentials - Microsoft Windows