![]() There is also an article published by the vendor Avira (askwoody had linked it), which explains why systems suddenly run so slowly. The support article describes the steps to get a affected machine up and running again. Some of these machines are completely unable to log in, and some log in after a very extended period of time. Windows machines (particularly those running Windows 7) are becoming locked or frozen on startup after Microsoft updates KB4462223, KB4493472, KB4493448, KB4464520, KB4462230 and KB4493435.Īvast customers are reporting their Windows machines with Avast for Business and Avast CloudCare products are becoming stuck or frozen on the login/Welcome screen. It concerns Avast for Business and CloudCare, which freeze Windows systems. This statement is now also available from AVAST (thanks to Ralf Lindemann for the comment). For more information see the Sophos support article. Microsoft has temporarily blocked devices from receiving this update if the Sophos Endpoint is installed until a solution is available. Microsoft and Sophos have identified an issue on devices with Sophos Endpoint Protection installed and managed by either Sophos Central or Sophos Enterprise Console (SEC) that may cause the system to freeze or hang upon restart after installing this update. The KB article on the affected updates now contains the following information: Microsoft has resynchronized the relevant updates for WSUS and blocked them for clients with Sophos, see also the German comment here and here. The Sophos kb article contains detailed descriptions of how to proceed if a machine is affected. Is there any known issues with KB4493472 on Windows Server 2008R2? This time there was no problem.Ĭurrently we are trying to unauthorise KB4493472 on our update system. I uninstalled the patch, rebooted and installed sophos again. After checking the Windows logs I realised that the server had installed update KB4493472 last night. I rebooted again in safe mode, disabled services, rebooted and uninstalled sophos again. Then I uninstalled Sophos, rebooted and tried to install again but this time the installation didn't complete and the server hang again. After this, I was able to reboot normally. I rebooted the server in to safe mode and disabled the Sophos services. The server became unresponsive, no rdp, no file share access, Ctrl Alt Delete not working. After initial examination I discovered that SAV service was logging lots of error messages in event log. Last night one of my Windows 2008R2 servers hung after installing Microsoft patch KB4493472. SAV service hangs after installing KB4493472 On 11 April 2019, Sophos confirmed its support with the article Sophos Central Endpoint and SEC: Computers fail/hang on boot after the Microsoft Windows Apupdate. Sophos Endpoint Protection and solutions from AVAST and Avira – mostly for corporate environments – were named. It soon became clear that the cause was related to installed security solutions from third-party manufacturers. Antivirus solutions from Sophos, AVAST and Avira cause antivirus problem The only remedy was to boot the machine in safe mode, uninstall the causing update and block it for installation. I 've blogged about this in the article April 2019 updates freezes Windows 7, 8.1, 10 & Server. While some users reported hassle-free update installations, others reported the system hanging. Later it became clear, that Windows Server 2008, Windows 8.1, Windows Server 2012/R2 as well as Windows 10 and its server counterparts were also affected. Already on Wednesday, April 10, 2019, there were first reports that updates freezes the systems during installation.įirst hints referred to update KB4493472 and clients with Windows 7 as well as Windows Server 2008 R2. The Windows updates released on Apcaused install issues problems on some machines. Looking back: Heavy issues with Windows updates Now an official confirmation by the software manufacturers is available. It is only an addendum to my articles yesterday (see April 2019 updates freezes Windows 7, 8.1, 10 & Server and the link list at end of article).
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