KB4486563 and KB4486564 fail to install for some but here's the fix

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Windows Bootloader Device Unknown boot error

Despite of the fact that Microsoft announced it would end support for Windows 7 OS next year, users recently received two regular updates on their systems. 

Notably,  the February 2019 Patch Tuesday Edition brings a bunch of bugs along with the updates. If you are someone who has been affected please read till the end.

KB4486563, KB4486564 bugs

As of now, four issues have been reported for the monthly rollup KB4486563 and cumulative update KB4486564.

1. KB4486563 fails to install

Some of the users reported that the operating system failed to install the update with the error code 0x80070003. The problem has been described as under:

Newest security update KB4486563 fails to install with code 80070003.
Can anybody help me find out what´s wrong? I have Win 7, 64 bit.

If you face any such issue at any point during the installation process you can use the workaround mentioned in the following guides:

2. VM Restore Issues

This issue has been inherited from the previous monthly updates in both KB4486563 and KB4486564.  If you have already restored or saved the VM, it may fail to restore successfully.

Failed to restore the virtual machine state: Cannot restore this virtual machine because the saved state data cannot be read. Delete the saved state data and then try to start the virtual machine. (0xC0370027).

The company has also suggested a temporary workaround for the bug. After you have installed the update, you need to shut down the virtual machines just before restarting the host. Microsoft promised to provide a permanent fix to the bug to be available by mid-February 2019, but the patch has not been released as of now. 

— RELATED: Patch Tuesday updates install Candy Crush on Windows 10 PCs

3. Event Viewer Problems

Microsoft states that some event descriptions for network interface cards (NIC) might not be visible in the Event Viewer after the installation of KB4486563 and KB4486564.

The company has not shared any workaround for the problem yet. While the solution is in progress and the patch is expected to be available in March 2019. 

4. Japanese date and time issues

Finally, the last known issue reported by Microsoft is the Japanese date and time issue. The bug has been reported after the installation of in KB4486563. 

You might notice that previously abbreviated Japanese date and time strings fail to parse after the installation of the update

You can manually fix the issue by tweaking the registry values as follows:


“1868 01 01″=”明治__Meiji_M”

“1912 07 30″=”大正__Taisho_T”

“1926 12 25″=”昭和__Showa_S”

“1989 01 08″=”平成__Heisei_H”

Microsoft is currently working to resolve the issue and it is expected to be available in the next release.

We hope that the bugs will be resolved in the next release for Windows Server 2008. While Windows 7 users are recommended to upgrade their systems to Windows 10 because Microsoft plans to end support after January 14, 2020. 


More about the topics: patch tuesday, windows 10 news, windows 7