I run windows Live Mail 2012. It has been running perfectly with 7 different Hotmail accounts. After installing Windows 10, only one account now functions. I cannot send or receive on any of the others. These account show Server error 3204 and Live Mail error 8xDE20003. I have applied Essentials Fix; Live Mail Fix; and Essential/Live Mail repair. No success. Somebody has suggested deleting the contents of a Registry file under HKEY_CURRENT_USER/Software/Microsoft/Windows Live/Communication Clients/Shared/Policies. My "Policies" file is already empty.

Can anybody help with this problem please.

[Original title: Live Mail corrupted by Windows 10]