If you cannot navigate the business portal, Microsoft maintains direct download URLs (valid as of this writing). Replace VERSION and ARCH accordingly:
Pro Tip: Bookmark the Edge Business Download page. Microsoft does not advertise the legacy 109 installer on consumer sites, but the enterprise page has retained it for over a year. Microsoft Edge Version 109 Offline Installer
The Microsoft Edge Version 109 Offline Installer is a standalone executable (usually named MicrosoftEdgeSetup.exe or architecture-specific like MicrosoftEdgeEnterpriseX64.msi) that installs Edge without requiring an active internet connection during setup. Version 109 is particularly significant because it’s the last Edge release to support Windows 7, Windows 8, Windows 8.1, and Windows Server 2012/R2. If you cannot navigate the business portal, Microsoft
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge]
"UpdateDefault"=dword:00000000
After setting this, Edge will never attempt to download version 110+ (which would fail anyway on your OS). Pro Tip: Bookmark the Edge Business Download page
Approximately 150–180 MB for the 64-bit version.