title: Change signature in Outlook Web (OWA) with Powershell
body: <p>Until now, I was using <code>Set-MailboxMessageConfiguration</code> in PowerShell to change OWA's signatures and it worked perfectly. No permission problems, no configuration problems, nothing.</p>
  <p>Today, I was trying to update my signature with PowerShell but nothing happened, the signature in the browser is not changed at all.</p>
  <p><img src="https://i.stack.imgur.com/6mtk3.png" alt="Signature OWA" /></p>
  <p>But if I use <code>Get-MailboxMessageConfiguration</code>, the new signature is there:</p>
  <p><img src="https://i.stack.imgur.com/ir2i1.png" alt="Signature PowerShell" /></p>
  <p>I can see that now, it's possible to manage multiples signatures in OWA. But I can't find find any information about that. So, how I can modify the already existing signature? Or, how I can create a new signature?</p>
  <p>----- Update 01/11/2021</p>
  <p>It's a new feature that is not available for everyone yet. My company's O365 account has it, but my student (also 0365) and classic Outlook account doesn't.</p>
  <p>So a third option is: How I can turn off this feature?</p>
  <p>----- Update 01/11/2021</p>
  <p>Still no defenitive solution.
  There're some workarounds that may work. Here's the github issue (opened by @Lee) and the Microsoft's Tech Community discussion:</p>
  <ul>
  <li><a href="https://github.com/MicrosoftDocs/office-docs-powershell/issues/8537" rel="nofollow noreferrer">https://github.com/MicrosoftDocs/office-docs-powershell/issues/8537</a></li>
  <li><a href="https://techcommunity.microsoft.com/t5/windows-powershell/cant-no-longer-change-owa-s-signature/m-p/2907053" rel="nofollow noreferrer">https://techcommunity.microsoft.com/t5/windows-powershell/cant-no-longer-change-owa-s-signature/m-p/2907053</a></li>
  </ul>