Blizzard has patched Classic Battle.net again.
The biggest change this patch is the restriction of legacy Diablo II 16-character CD-keys. Now in order to log in with Diablo II and/or its expansion pack, you will be required to register your CD-key on Battle.net with your Battle.net account, and then use the new 26-character game key instead.
Servers will be upgraded on Tuesday at 10am PST. Expected downtime is less than 1 hour.
- [D2] Network migration for inbound server traffic to increase performance and reliability
- [D2] Disable the use of claimed 16 digit keys to prevent abuse
- Improved service monitoring and alerting
Thanks, Classic Games
Claim old 16 digits on your battle.net account here:
Look up your current cd keys: