Windows users with Qualcomm Wi-Fi adapters might suffer from sporadic loss of connectivity after installing the Windows 10 May 2019 Update because of out-of-date network drivers. An update block has been put in place to prevent any issues stemming from incompatible Qualcomm drivers. Windows users who have updated their computers Windows 10 version 1903 will be alerted about insecure networks using the older Temporal Key Integrity Protocol (TKIP) or Wired Equivalent Privacy (WEP) These two security protocols are known to have flaws that allow potential attackers to decrypt the traffic and not be as secure as WPA2 or WPA3.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-losing-connectivity-from-outdated-wi-fi-drivers/