Microsoft has confirmed that the April 2019 cumulative update is not playing well with some PCs. On Tuesday, referred to as Patch Tuesday, Microsoft rolled out the April updates to Windows 10, 8.1, and 7 machines. As has been the case recently, it didn’t take long for the updates to cause performance issues.
Numerous users had detailed their experience since installing the update. Some report that Windows has slowed down considerably after installing the update, taking several minutes to reach the login screen or access Task Manager. Others claim their system freezes or hangs up during the boot process.
A post on Microsoft Answers echoes this, that after installing the update, systems become unresponsive. Interestingly, it also seems the update is posing a conflict with systems running certain antivirus programs. It’s become pervasive enough to prompt both Avast and Avira to separately issue statements to their customers. Both companies confirm that the updates are causing problems, especially for Windows 7 users.
Both Avira and Avast state that the problem is being investigated and the suggested solution is to roll back to a previous version of Windows. Likewise, Microsoft has temporarily blocked the updates from going out until it reaches a resolution.
How to resolve freezes, slowdowns after April 2019 updates
In case you have antivirus software installed and you are hit with performance issues after the April 2019 Windows updates, you can uninstall the flawed patch to address the problem.
On Windows 10, Settings > Windows Update and select View update history. Look for KB4493509 and uninstall it.
On Windows 7, go to Control Panel > Windows Update > Show Update History ? Installed Updates. Uninstall KB4493472 and KB4493448 from your Windows 7 machine.