Users have raised concerns about the latest Windows 11 cumulative update released on Tuesday, reporting a range of system problems. These observations have been noted by the Windows Latest portal and echoed by many users across different PC configurations.
KB5026372, the Windows 11 cumulative update, was designed to boost performance and stability. Yet a notable portion of users experienced VPN issues, particularly with L2TP/IPsec connections. Some reported a dramatic drop in network throughput, while others faced trouble when downloading files via SFTP over L2TP/IPsec. Attempts to fix the problems by refreshing WAN settings, flushing DNS, disabling IPv6, or momentarily turning off the firewall did not resolve the glitches for affected machines. In several cases, the update appeared to interfere with VPN tunnels enough to disrupt ongoing sessions rather than reconnect cleanly.
Another troublesome effect tied to the update was a reported BitLocker Drive Encryption change that, for a subset of devices, nudged the system into a perpetual automatic repair cycle. In such scenarios, conventional troubleshooting steps fall short, and a clean reinstall of Windows has been described as the only viable remedy, according to user reports gathered from multiple sources including the Windows Latest community forums and user feedback channels.
Additional reports described a shutdown behavior where computers would unexpectedly power down after applying the update instead of performing a restart. This kind of issue often requires deeper diagnostic steps, including checking BIOS/UEFI settings, reviewing event logs, and validating that firmware and chipset drivers are compatible with the updated Windows build. While Microsoft has not issued a formal acknowledgment of these widespread reports, users who are affected are commonly advised to roll back to the previous version of Windows 11 to restore normal operation and reduce risk while a fix is developed. This uninstall option can provide a temporary safety net for devices experiencing instability after the update.
Industry observers and IT professionals emphasize the importance of verifying system readiness before implementing major updates, including confirming active VPN configurations, testing critical applications, and ensuring that security software is compatible with the new build. As with many large Windows updates, some issues can be device-specific, arising from hardware variances, driver versions, or conflicting software. The broader takeaway is to monitor official guidance, perform cautious testing in a controlled environment before widespread deployment, and maintain recent backups in case a rollback becomes necessary. User experiences cited by Windows Latest and other tech communities illustrate the evolving nature of Windows updates, where a release meant to improve performance can temporarily disrupt daily workflows for certain users. In the meantime, users encountering the above problems are advised to consider uninstalling KB5026372 and reverting to the prior Windows 11 version while Microsoft continues investigation and potential remediation efforts.