Microsoft Confirms New Bug in Cumulative Update for Windows 10 KB4493509, KB4493464

Microsoft has confirmed a new problem in several cumulative updates provided to Windows 10 devices as part of the April 2019 fix on Tuesday of this week.

Although this bug may not affect consumers, but business users and businesses, Microsoft says it has already started work on a fix and that it should be deployed in an upcoming update. The company explains the following:

"Some operations, such as renaming, that you perform on files or folders that are on a shared cluster volume (CSV) may fail with the" STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5) "error. This occurs when you perform the operation on a CSV owner node from a process that does not have an administrator privilege. "

While a solution is in development right now, two workarounds are currently available. The software giant recommends users to perform the operation from a process that has already received administrator permissions or launch it from a node without CSV ownership. .

Cumulative updates concerned

At the time of writing this article, this bug is confirmed in the following cumulative updates for Windows 10 (all released April 9th):

KB4493509 (OS Build 17763.437) – Windows 10 version 1809
KB4493464 (OS Build 17134.706) – Windows 10 version 1803
KB4493441 (OS Build 16299.1087) – Windows 10 version 1709
KB4493474 (OS Build 15063.1747) – Windows 10 version 1703
KB4493470 (OS Build 14393.2906) – Windows 10 build 1607
KB4493475 (OS Build 10240.18186) – Windows 10 RTM (original version)

To check the version number on your device, click the Start menu and type winver. If the version number matches those mentioned above, you are using the latest version of Windows 10 and the available cumulative update has already been installed.

Microsoft has not proposed a target release date for the patch, and the next hotfix rollout on Tuesday should begin on May 14th.

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