<p>I have received a laptop with a new Office 2016 Standard installation. The user is receiving constant pop up messages <strong>Enter a Product Key or Sign in</strong> when using Microsoft Office.</p>
<p>This user has installed a Microsoft Office volume license version. You can check if you have a volume license version of the Office by opening Word or any other Office application and clicking on <strong>File | Account</strong>.</p>
<p>Volume license versions are named <strong>Office Standard</strong> or <strong>Office Professional Plus</strong> and have a <strong>Change Product Key</strong> link.</p>
<p><a href="https://www.wincert.net/wp-content/uploads/2018/03/office-activation-2.png"><img class="alignnone wp-image-2509 size-full" title="Enter a Product Key" src="https://www.wincert.net/wp-content/uploads/2018/03/office-activation-2.png" alt="Enter a Product Key" width="650" height="445" /></a></p>
<p>Even though my friend has removed the pre-installed Office 365 that came with the device, then installed and activated the Microsoft Office Standard 2016, he was receiving the popup message on every start of Office application.</p>
<p><strong>Enter a Product Key or Sign in</strong><br />
<strong>Enter a Product Key, or sign in with the account you used to purchase Office 365.</strong></p>
<p><a href="https://www.wincert.net/wp-content/uploads/2018/03/office-activation.png"><img class="alignnone wp-image-2510 size-full" title="Enter a Product Key" src="https://www.wincert.net/wp-content/uploads/2018/03/office-activation.png" alt="Enter a Product Key" width="1220" height="600" /></a></p>
<p>I&#8217;m guessing that the problem is related to Office 365 not being completely uninstalled from the system.</p>
<p>In order to remove this popup window here&#8217;s what you have to do:</p>
<p>Close Office applications.<br />
From the <strong>RUN</strong> prompt type <strong>REGEDIT</strong> and hit enter.<br />
Navigate to the following registry key:<br />
<strong>HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\16.0\Common\OEM<br />
</strong>Right-click on the <strong>OEM</strong> key/folder and click <strong>DELETE</strong>.</p>
<p>Now browse to the following registry key:<br />
<strong>HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\Common\OEM<br />
</strong>Right-click on the <strong>OEM</strong> key/folder and click <strong>DELETE</strong>.</p>
<p>Close the Registry Editor and now you shouldn&#8217;t see any more pop-ups.</p>
<p>Comments are welcome.</p>