Any damage to the signature can cause window update error 80072efe in Windows Update. The Catroot2 system folder contains the signature for Windows updates. Change the DNS address and reset Winsock, TCP / IP, DNS.

Local providers give their unstable DNS.

If you have a program or extension in the VPN / Proxy browser, then disconnect or uninstall for a while.

Disable third-party antivirus and firewall and check for updates.

Run troubleshooting for the network adapter and update center.It could be Microsoft servers themselves. How to fix window update error 80072efe in Windows 10/7

The window update error 80072efe can appear on Windows 7 and Windows 10 and is supplemented by the following message “Connection to the server was disconnected” and have the code: Third-party antiviruses and firewalls can block the connection to the servers for updating and thereby cause an error. If your Internet connection is interrupted, it may be that the rootkit virus may be the culprit of this problem. This means that it may be due to bad Internet on your part or the microsoft server is temporarily not working. The main cause of window update error 80072efe in Windows Update is the disconnection between your computer and Microsoft servers.

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