This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
On July 6 I installed the updates v16.63 (2207500) and in New Outlook the signatures from all four of the email accounts I have, have all disappeared. They are not visible in SIgnatures, and the '+' button in Edit Signatures does nothing – I can't recreate the signatures. I've upgraded to v16.63 (22070801) but no change.
I switched back to Legacy Outlook nd the signatures were all there, and I could edit and add signatures. Switching back to New Outlook, my signatures had reappeared, but once I restarted my MacBook, in New Outlook the signatures are not present and I cannot add any.
MacBook Pro (2012)
Mac OS Catalina Version 10.15.7
Microsoft 365 Business Standard
Any help gracefully received. I've tried the customer Customer Support button but the chat responses are painfully slow - conversation has been going on since July 7th with diagnostic questions taking 18-48 hours to appear.
Using older versions of Outlook for Mac for personal email and calendar
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Same Issue, signatures disappear and cant add new ones. Very Frustrating
You don't need the full Office 365 installer or have to wait on Automatic updates or the AppStore to get the latest version. You can manually download and install the update v16.64 posted on Microsoft's website. these have both the full Outlook installer and the updater. The Outlook updater is a small download.
The individual installers and updaters are here for 16.64 (non-app-store version I assume but they appear to work with the AppStore version too)
https://docs.microsoft.com/en-us/officeupdates/update-history-office-for-mac
Facing the same issue with 2019 MBP.
Run the latest update and it should upgrade to v16.64. Problem solved.
This is not only a Mac issue. The same issue is plaguing my Windows system as well. Imagine my surprise to come into work, this morning, and all of my Signature Templates are removed. Talk about frustrating!