Problems & Solutions
Troubleshooting guides and known issues for Email Signature Manager
User is not receiving signature and is not visible in Email Signature Manager
Fix users missing from deployment by completing required Active Directory logon name and email fields.
OWA signatures are not updating in Office 365
Fix Microsoft 365 OWA signature updates blocked by roaming signatures and review Signature 365 migration guidance.
Image in email signature in reply email is replaced with placeholder
Learn why iPhone and iPad Mail replaces reply images with filenames and why no product fix exists.
Uninstalling the Email Signature Manager Agent programmatically
Programmatically remove ClickOnce or MSI agent installations with PowerShell or MSI uninstall commands.