<p>Windows 10 Sleep not working is an issue that keeps coming back with each Windows 10 fresh installation. This issue was bugging me on both of my PC&#8217;s and while the Sleep mode is working normally after a fresh installation of Windows 10, it stops to work after some time.</p>
<p>This is happening because some service, process, or application is preventing the system to enter sleep mode. In order to detect the cause of this issue, we&#8217;ll have to use <strong>powercfg</strong> commands from the <strong>Command Prompt</strong>.</p>
<p>Open<strong> Command Prompt</strong> in elevated mode <strong>(Run as administrator)</strong></p>
<p>type the following command: <strong>powercfg -requests</strong></p>
<p>This will show the process that&#8217;s preventing the sleep mode from working. Please check the <strong>Execution</strong> part of the result screen.</p>
<p><img class="alignnone wp-image-4128 size-full" title="Windows 10 Sleep not working" src="https://www.wincert.net/wp-content/uploads/2021/03/msoreworker.png" alt="Windows 10 Sleep not working" width="587" height="411" /></p>
<p>In my case, this issue was caused by the <strong>USO Worker (MoUsoCoreWorker.exe) process</strong>.</p>
<p><span class="ILfuVd"><span class="hgKElc"><strong>MoUsoCoreWorker.exe</strong> is a replacement file for <strong>wuauclt.exe</strong> which is related to <strong>Windows updates</strong> and is located in <strong>C:\Windows\System32</strong>.</span></span><span class="ILfuVd"><span class="hgKElc"> &#8216;Uso&#8217; stands for <strong>Update Session Orchestrator</strong>.</span></span></p>
<p>You may find several articles suggesting that you should disable <strong>Update Orchestrator Service</strong> or even the <strong>Windows Update service</strong> which is not a smart thing to do.</p>
<p>The better solution is just to override the <strong>MoUsoCoreWorker.exe</strong> process so Windows 10 Sleep mode can work normally again.</p>
<p>In the same command prompt window type the following command: <strong>powercfg /requestsoverride process mousocoreworker.exe execution</strong></p>
<p><img class="alignnone wp-image-4129 size-full" title="Windows 10 Sleep not working" src="https://www.wincert.net/wp-content/uploads/2021/03/mousocoreworker-process.png" alt="Windows 10 Sleep not working" width="757" height="282" /></p>
<p>With this set, the sleep mode will now override this process and continue to work normally.</p>
<p>You can also type <strong>powercfg /requestsoverride</strong> to check the command result as seen in the image above.</p>
<p>Close the <strong>Command Prompt</strong> window and wait for your Windows 10 PC to enter sleep mode, no need for a system restart.</p>
<p>If you would like to remove this override type the following command: <strong>powercfg /requestsoverride process MoUsoCoreWorker.exe</strong></p>
<p>Hope this helps.</p>

Sleep mode not working on Windows 10 PC
