Hello Alan Connolly,
The error message “the requested operation requires elevation” indicates that the installer is attempting to run with administrative privileges, but the process is being launched without elevation. Even though you are a global administrator in Microsoft 365, that role does not automatically grant local administrative rights on the Windows machine itself.
You need to confirm that your account is part of the local Administrators group on the device. Open compmgmt.msc, expand Local Users and Groups > Groups, and check the membership of Administrators. If your account is missing, add it. If the machine is Azure AD joined, go to Settings > Accounts > Access work or school > Connected to Azure AD, then select Manage Azure AD roles and ensure your account is listed under Device administrators.
Once confirmed, you should run the installer explicitly with elevation. Right‑click the installer executable and choose Run as administrator. If you are deploying via Intune or Endpoint Manager, make sure the app deployment is configured with Install behavior = System rather than User, otherwise elevation will fail.
If you have already checked these and the problem persists, it may be due to User Account Control (UAC) policies. Verify the registry key HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System and ensure EnableLUA is set to 1. If it is disabled, elevation prompts will not appear, and installers requiring elevation will fail.
I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!
Domic Vo.