On the morning of Saturday Pacific hour, our servers suffered an outage worldwide due to D2R Items an unexpected and significant increase in traffic" PezRadar explained. "This was a new threshold which our servers have never encountered before or even prior to the launch.

The issue was made worse by an update we put out earlier in order to improve performance for games. Both of these factors overwhelmed our global database which caused it to crash and time out."

To help ease the load, Blizzard rolled back the Friday update, but that measure was not enough. A much greater growth in traffic caused a second issue on Sunday.

The situation turned sour on Monday. Blizzard fixed the Diablo 2's backup database and then tried to switch to it. Once the switch was completed, it continued running backup processes instead of servicing request from distant servers. "We have reached out to our third-party partners too," PezRadar said.

That issue was fixed on Tuesday, but another massive number of concurrent users was reported on the same day has led to "degraded database performance," which database engineers are still working to correct.

The situation is serious enough it is that the Diablo 2: Resurrected team has roped in engineers from other departments of Blizzard to help fix smaller problems while it concentrates to Diablo 2 Resurrected buy items address "core problem with server."