KB4493436 updates Windows 10 1703 to Build 15063.1784

Cumulative Update KB4493436 comes into effect on 25th April and upgrades Windows 10 version 1703 to Build 15063.1784. With this patch up release, Microsoft solves several pending issues of Japanese Era Calendar such as fonts, input method editor, NLS registry and many others.

In addition to the above, they also fix issues related to ShellExperienceHost.exe, CALDATETIME, Custom URI schemes, etc. Here, in this post, we have discussed the key improvements and fixes of KB4493436 in detail so that you get an overall glimpse.


General Improvements and fixes- Windows 10 1703

Let’s have a look at the key changes that appear on the KB4493436 cumulative update for Windows 10 1703.

Improvements in Japanese Era Calendar

  1. Allows Text-To-Speech i.e. TTS functionality to assist Japanese Era Characters.
  2. Updates the NLS registry to support the new Japanese Era.
  3. Addresses an issue that restricts the CALDATETIME structure from handling more than 4 Japanese Eras.
  4. Resolves the underlying issue which stops ShellExperienceHost.exe from responding. This occurs only when the start date of the Japanese Era doesn’t match the first day of the month.
  5. Updates the existing fonts and adds alternate fonts to aid the new Japanese Era.
  6. Fixes an issue in which Clock & Calendar flyout control displays the incorrect day of the week when mapped to a date in the month on this Japanese Era.
  7. Fixes a bug that hinders an input method editor (IME) from supporting characters on this Calendar.
  8. Addresses an issue which let incorrect date to be displayed on DateTimePicker application.
  9. Solves a bug which let Date and Time Settings to store old cache and won’t erase the same even after refreshing time on Japanese Era.

Major Fixes

  • Fixes an issue that causes Internet Explorer to block a sub-resource download; when it’s opened up on an HTTP protocol that uses HTTPS protocol.
  • Addresses an issue that may prevent Custom URI Schemes for Application Protocol handlers from starting the corresponding application for a local intranet and trusted sites on Internet Explorer.
  • Addresses a bug that generates the error “0x3B_c0000005_win32kfull!vSetPointer” when the kernel-mode driver i.e. win32kfull.sys accesses an invalid memory location.
  • Solves an issue that may stop the touch screen from responding after a restart.
  • Addresses a gradual memory leak in LSASS.exe on systems that have cached logon enabled. This trouble primarily affects those servers which process several interactive logon requests like- web servers.
  • Addresses an issue in which users can logged into an account using a smart card once they disable the account.
  • Fixes an issue that restricts access to enterprise resources while using Kerberos with Windows Hello for Business (WHfB) credentials. In such cases, users receive multiple prompts asking to provide their credentials.
  • Addresses a bug that creates a PostScript printer occasionally so as to use the wrong font.

Some other fixes

  • Addresses an issue in which policy providers (PolicySOM) and Windows Management Instrumentation (WMI) consume every possible User Datagram Protocol (UDP) ports. This was so bad that they can turn all machines into unresponsive ones.
  • Addresses trouble that causes a roaming profile user to lose customized Start menu settings after upgrading to newer builds. Once you install this release on your System as an administrator, you should also enable the registry UseProfilePathMinorExtensionVersion. If you are using a Roaming User profile (RUP), read KB4493782  to get more information on this.

Using the above guide, you can create a new RUP for your own OS and in turn, this prevents the loss of a custom Start Menu. The RUP must be stored locally, and you must restart the device to enable the feature.

Knows issues- KB4493436 Cumulative update

Symptoms Workaround

Certain functions like renaming of files or folders on a Cluster Shared Volume (CSV)  might fail on a peculiar error.


This will occur only when you use non- administrative accounts to perform similar operations on the CSV owner node.

To fix this issue, you can use any of the two ways elaborated below-

  1. Perform the operation using a process that has administrator privilege.
  2. Perform the operation using a node that doesn’t have CSV ownership.

Microsoft is working on a resolution and will provide an update in an upcoming release.

How to get this update

If you are here, you must want to install KB4493436 on your System. However, we recommend (backed by Microsoft) you to first install the latest SSU i.e. KB4487327 on your PC. This will ensure that nothing goes wrong during the whole update process or even if it does; it will take care of the random bug.

You will receive a notification regarding this new release on your System. Only then, you should proceed ahead to avoid intermediate risk. However, if this doesn’t come for a long time, you can download this file manually as well. Here are the steps to follow-

  • At first, navigate to the following path.
Settings --> Update & Security --> Windows Update

You can have the Standalone Package of this update directly from Microsoft Update Catalog.

Source – Windows Support