Takeways:

* China is pulling the plug on an older version of Microsoft Corp.’s Windows tailored for government agencies to reduce its dependence on foreign technology.

* The Chinese Ministry of State Security told some state-linked entities to uninstall customized Windows 10 software from their machines, moving up the schedule to discontinue the operating system.

* Beijing’s instruction stemmed from data security concerns, according to people familiar with the matter, who did not elaborate on the potential vulnerabilities Chinese officials are worried about.