On almost all computers on the network BSOD 0x000000D1 srvnet.sys Virus?

Question

Microsoft

On almost all computers on the network, when you turn on the BSOD 0x000000D1 srvnet.sys.
If you disconnect the computer from the network, then everything is fine. If you connect the network, then within an hour the same blue screen appears. Did not affect computers on Windows 10 and XP.
There was also such a moment that when I disconnected the network on one of the machines, I immediately got a blue screen on almost all computers.
What is it and how to find the culprit?
On the machines where I installed the March security updates: https://technet.microsoft.com/library/security/MS17-010 there was no more blue screen.

Answer 1

Here

Current issue since April 2017: Crashes in srv.sys due to critical EternalBlue vulnerabilities in the SMBv1 protocol, described in Microsoft Security Bulletin MS17-010.
Resolution: Install the appropriate update for your operating system, download links are provided in the bulletin (in the table, the left column of Operating System).