topic Re: AutoCAD 2016 User Account Control Error in Previous Version Support Forum

AutoCAD 2016 User Account Control Error

jitendra_guptaENA7X — Thu, 04 Sep 2025 04:10:39 GMT

Hi,

We are currently using AutoCAD Mechanical 2016 and since we don’t have AMC support, we are unable to upgrade. Recently, users started encountering a UAC prompt every time they try to open AutoCAD Mechanical. The application works only when admin permission is granted, but it does not run normally without it.

Here’s what I have tried so far:

Reinstalled the application (issue still persists)
Verified that Windows Defender is not blocking it
Searched online but couldn’t find any relevant fixes

I am attaching the screenshot of the UAC error for reference.

Has anyone faced this issue before? Would appreciate any expert advice or workaround to resolve it.

Thanks in advance!

Re: AutoCAD 2016 User Account Control Error

vladimir_michl — Thu, 04 Sep 2025 04:35:10 GMT

Hi, this is a known problem caused by the latest Windows updates. See the article https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/After-installation-of-Security-Update-for-Microsoft-Windows-AutoCAD-products-request-admin-credentials.html

Vladimir Michl, www.arkance.world - www.cadforum.cz

Re: AutoCAD 2016 User Account Control Error

jitendra_guptaENA7X — Tue, 09 Sep 2025 11:43:34 GMT

Through Registry changes on computer its working.