You must restart the computer after you apply this hotfix. To apply this hotfix on Windows 8.1, you must have update 2919355 installed.

Modern Standby is a Windows 10 feature that is not supported on Windows 8.1 Note This hotfix enables Windows 8.1 systems that are running the Intel Skylake chipset together with Modern ACPI settings to enter the S3 sleep state. If you do not see your language, it is because a hotfix is not available for that language. The 'Hotfix download available' form displays the languages for which the hotfix is available. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, go to the following Microsoft website: The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

If the hotfix is available for download, there is a 'Hotfix download available' section at the top of this Knowledge Base article. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix. This hotfix might receive additional testing. Apply this hotfix only to systems that are experiencing the problem described in this article. However, this hotfix is intended to correct only the problem that is described in this article. If the Sleep option exists on the Power menu, this update is not needed.Ī supported hotfix is available from Microsoft Support. Note Not all Skylake computers are affected. When you click the Power button from the Setting charm, the Sleep option is missing. You have a Windows 8.1-based computer that uses the Intel Skylake chipset with modern Advanced Configuration and Power Interface (ACPI) settings.

Windows 10 missing sleep option