If you installed the latest batch of patches from Microsoft this week and found that your computer started to freeze up or fail to boot, you are not alone.
The Microsoft April 2019 Patches are not working well with some antivirus software, and users of Windows 7, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2 systems - who have installed the updates are experiencing these problems: freezing, inability to boot, or hang on installing updates.
Avast, Avira, Sophos and Microsoft support articles suggest there is a conflict between some of the recent updates and antivirus software such as Sophos Endpoint Protection, ArcaBit, AVG Business Edition, Avira antivirus, Avast for Business and CloudCare.
Sophos is reporting conflicts with the following updates:
- April 9, 2019 - KB4493467 (Security-only update) - Windows 8.1, Windows Server 2012 R2
- April 9, 2019 – KB4493446 (Monthly Rollup) - Windows 8.1, Windows Server 2012 R2
- April 9, 2019 – KB4493448 (Security-only update) - Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1
- April 9, 2019 – KB4493472 (Monthly Rollup) - Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1
- April 9, 2019 – KB4493450 (Security-only update) - Windows Server 2012, Windows Embedded 8 Standard
- April 9, 2019 – KB4493451 (Monthly Rollup) - Windows Server 2012, Windows Embedded 8 Standard
Avast has indicated that KB4493472 and KB4493448 updates are causing problems, as well as an additional KB4493435 update. KB4493435 is a Cumulative security update for Internet Explorer.
Finally, Avira has stated that KB4493472 and KB4493448 for Windows 7 will cause Windows to operate slower than normal. They suggested uninstalling these Windows updates for now until they can release a fix.
How to resolve freezes and boot loops
If your Windows 7 is struggling – fails to start, freezes, or gets stuck at Configuring Updates after installing the April 2019 updates, you may have to remove the update to get Windows working properly.
Sophos recommends the following steps to remove the updates from an affected computer:
- Boot into safe mode
- Disable the Sophos Anti-Virus service
- Boot into normal mode
- Uninstall the Windows KB
- Enable the Sophos Anti-Virus service
If enabled, Tamper Protection will need to be disabled to re-enable the service
Avast recommends that you boot your computer into Safe Mode and then uninstall the B4493472, KB4493448, and KB4493435 updates.
Also, we would like to remind you that Support for Windows 7 is ending soon, and if you run into an issue in future, Microsoft would not be sending any updates or patches and your machine would be vulnerable. We can help you make an upgrade to Windows 10.