topic Re: Start Mode is read-only in AutoCAD Mechanical Forum

Start Mode is read-only

Anonymous — Mon, 28 Jan 2019 21:35:54 GMT

Trying to get my start tab back and it says to change start mode value to 1 instead of 0. However my start mode is set to read-only and neither myself or our AutoCAD guru can figure out how to fix that.

Re: Start Mode is read-only

gaurav.satalkar — Thu, 31 Jan 2019 08:55:28 GMT

Hello,

You will have to make this change in your registry: Change the value to 1.

HKEY_LOCAL_MACHINE\SOFTWARE\Autodesk\AutoCAD\R21.0\ACAD-0005\Variables\*DISPLAYSTARTTAB

Follow this AKN article:

https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-prevent-users-from-turning-the-Start-tab-back-on-in-AutoCAD.html

Hope this solves your problem.

Please ACCEPT AS SOLUTON if this works

Thank You,

Re: Start Mode is read-only

Anonymous — Fri, 01 Feb 2019 14:21:53 GMT

That is the first thing I did however it did not resolve the issue. Also I only have R22.0 not R21.0, not sure if that makes a difference.

Re: Start Mode is read-only

gaurav.satalkar — Fri, 01 Feb 2019 14:35:12 GMT

Then you need to make the change under R22. Also set the Startmode, after changing the registry key.
You can try that and restart your product.

Hope this works.

Thank you

Re: Start Mode is read-only

Anonymous — Fri, 01 Feb 2019 14:42:26 GMT

Had to restart my machine but it worked! Thank you much.

Re: Start Mode is read-only

VA7GCE — Thu, 19 Sep 2019 21:04:44 GMT

Hi @gaurav.satalkar ,

we are having this issue on our C3D 2019, the start-up page won't load, and the "StartMode" is set to "0" and readonly. Even if I change that to "1" in the registry, reboot computer, and relaunch C3D, it will revert it back to "0". any suggestion?

Thanks.

Re: Start Mode is read-only

Anonymous — Thu, 19 Sep 2019 21:17:51 GMT

Make sure you are making this change from 0 to 1 in the HKEY registry (on your machine) AND in the command line (in autocad) type in STARTMODE and make the change there as well. Then power off and back on.

Re: Start Mode is read-only

Anonymous — Thu, 19 Sep 2019 21:26:53 GMT

Sorry, forgot to clarify getting to HKEY_LOCAL_MACHINE go to start bar and type in regedit.

Re: Start Mode is read-only

VA7GCE — Thu, 19 Sep 2019 21:44:26 GMT

Thanks @Anonymous for your reply, however, I don't think that is going to work.

first, I changed "StartMode" from 0 to 1 in Registry, but as soon as I re-launch C3D 2019, that key will revert back to 0,

and there is no way in C3D to set "StartMode" to "1" as it's read-only, as you can see on that image.

Re: Start Mode is read-only

VA7GCE — Thu, 19 Sep 2019 21:47:54 GMT

is that key under local_machine?

I changed the one under "Computer\HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R23.0\ACAD-2000:409\Profiles\PROFILENAME\Variables"

Re: Start Mode is read-only

Anonymous — Thu, 19 Sep 2019 22:06:05 GMT

My exact path:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Autodesk\AutoCAD\R22.0\ACAD-1005\Variables\*DISPLAYSTARTTAB

Set (default) to 1

Re: Start Mode is read-only

VA7GCE — Fri, 20 Sep 2019 20:32:56 GMT

thanks @Anonymous , the issue has been resolved, the registry does allow the "StartMode" to be writeable.

the issue was caused by the deployment package, IT didn't select the "Display start tab" when they created the deployment, mine was the first test machine and installed manually.

Re: Start Mode is read-only

staghaus002 — Wed, 27 Nov 2024 05:44:32 GMT

and where is that in autocad for mac? 🙂

Re: Start Mode is read-only

russellGCS4G — Sun, 19 Oct 2025 14:25:34 GMT

Looking for this for Mac too. No registry 🙂

Re: Start Mode is read-only

pendean — Mon, 20 Oct 2025 13:00:00 GMT

@russellGCS4G @staghaus002 That's not an option on the MAC interface of plain AutoCAD, never has been, still is not. Sorry. This forum is also for a specific variant of AutoCAD that you cannot run natively on a MAC either.

You both need to be asking and posting in the AutoCAD FOR MAC forum over here for your future Mac variant queries

https://forums.autodesk.com/t5/autocad-for-mac-forum/bd-p/autocad-mac-forum-en

HTH