Getting Error "Illustrator.exe - Entry Point Not Found" while opening Illustrator 2021 on Windows

[marinas33460189]

Hello guys,

Could you please help me with the error occurred today with my Illustrator? When I open Illustrator the error window appears and it says:

"Illustrator.exe - Entry Point Not Found

The procedure entry point SetThreadDescription could not be located in the dynamic link library:

C:/Program Files/Adobe/Adobe Illustrator 2021/Support Files/Contents/Windows/AIACPL.dll."

It happened right after the Illustrator updated today 😞

Thank you in advance.

{Renamed by MOD}

[sishamIAGD]

Have you tried whats stated on this post..?

https://community.adobe.com/t5/illustrator-discussions/illustrator-exe-entry-point-not-found/td-p/99... 

[Anshul_Saini]

Hi there,

Sorry about the trouble. I would like to know if the steps suggested above by @sishamIAGD worked for you? If not, I would request you to share a few more details along like:

• OS and version of Illustrator
• When did this start happening?
• Are there any recent changes made to your system? For example, any antivirus, system updates, or web extensions installed recently.

Also, you may try the steps suggested in this community post (https://community.adobe.com/t5/download-install-discussions/illustrator-exe-entry-point-not-found/td...) and let us know how it goes.

We will be looking forward to your response.

Thanks & Regards,

Anshul Saini

[marinas33460189]

Hello,

Yes, I've tried all of those steps, but they didn't work for me. Ive tried to get back to the previous version and it worked.

Illustrator has been updated today to 25.4.1 and immediately stopped working. The previous, 25.3.1 works.

Perhaps my OS is quite old, but I can't update with the PC I have now.

Thank you for your comments in any case!

[Anshul_Saini]

Sorry to hear that you had to roll back to the previous version. Please feel free to reach out if you run into any other questions or issues in the future, and we'd be happy to help. 

Thanks & Regards,

Anshul Saini

[bluebrad]

What needs to happen is adobe needs to lissen to there users stop feture updates and build 64bit muilti core support and limited ram. make the program stable before the next update

its been 12 years not and still no 64bit multi core.

[RZhasan]

I am having the same issue as OP.

I am on Windows 10.

Followed everything I can find online but nothing is helping.

[default4n90x9r0b11r]

Hey I was struggling all day with this, I just finnaly got something to work. I just removed the program, then installed the previous version. Not sure why, but it worked. Best of luck!

[RZhasan]

I have done the same and its working for me now.

I hope Adobe fixes this on their next release.

[imageworx]

Ive uninstalle 24.4.1 and reistalled previous twice to no avail. This issue occured after IT installe more ram.

[eagleab]

exactly the same problem  what to do?

[michaelwigle]

Please see the post from Anshul_Saini below regarding supported versions of Windows 10 and Windows Server. Upgrading Windows is the only permanent solution.

[Anshul_Saini]

Hi All, (@marinas33460189, @RZhasan, @default4n90x9r0b11r)

We are sorry for the trouble. This error occurs due to Windows OS, and it can be fixed. But I will need you all to share the screenshot of the Windows version, Build no., and error message you are getting so that we can look for the exact .dll file that is causing this. The .dll files are dynamic link libraries for the extensions to communicate with Illustrator. Some Windows builds will cause problems here because the extensions may not be compatible with that Windows Build.

To check your Windows version and build number, you may open the Run Dialog box by pressing Win+R, type "winver," and press enter.

We are here to help. We just need more information.

Thanks & Regards,

Anshul Saini

[RZhasan]

Thank you Anshul. Here is my windows version:

[Anshul_Saini]

Thank you for sharing the Screenshot @RZhasan. Could you please also share the screenshot of the error? So, we can get the exact name of the ".dll" file causing the issue.

Regards,

Anshul Saini

[JebodiahAngusMcCoy]

[Anshul_Saini]

Hi @JebodiahAngusMcCoy,

Thank you for sharing the screenshot of the error. Could you please also share the screenshot of the Windows version and Build no. as asked above by me.

To check your Windows version and build number, you may open the Run Dialog box by pressing Win+R, type "winver," and press enter.

Regards,

Anshul Saini

[RZhasan]

I did provide it already in some previous comments but will post here again.  @Anshul_Saini 

[Candace5E71]

Hi Anshul,

I am having the same issue. Please please help! I have spent the past 3 days trying to sort this issue out and I still can't get fixed. Even when I try to unistall the latest version and then reinstall the older version it's still not working. The older version will open up and you think it will work but than it crashes when I try to open up any of my illustrator files. I have attached a screen shot of both my Windows version and the error message that I am getting.

Thanks in advance. I pateiently await your reply. 

[michaelwigle]

Running Illustrator on Server 2016 as a Remote Terminal Server and getting the same problem as everyone else even after a reinstall. Didn't do the Adobe Cleaner because if it's not guaranteed to work I don't want to remove every Adobe product for all of my Remote Users simultaneouly.

[Anshul_Saini]

Thank you for sharing the screenshots @michaelwigle, @Candace5E71, @RZhasan. I checked, and you all need to upgrade your Windows OS as Illustrator is not supported on the following versions:

• 1507
• 1511
• 1607
• 1703
• 1709
• 1803

After updating the Windows OS, perform the steps suggested on the CC Cleaner Tool help article, uninstall the Illustrator, and reinstall it from the Creative Cloud Desktop app.

Regards,

Anshul Saini

[switchs93828382]

This isn't a solution though is it. Anyone using Windows Server 2016 can't update beyond 1607 without replacing their operating system. 

[michaelwigle]

Yup, I'm going to be trying to do an in-place OS upgrade to server 2019 in order to support Illustrator with Terminal Services. We'll see how it goes. Definitely unfortunate that Server 2012 R2 support is being dropped, but I guess I get it. It is an almost 10 year old OS after all...

[RZhasan]

I am on a network license and I can't go beyond current version - the license is for build 13493 using Microsoft Windows 10 enterprise 20216 LTSB license.

[RZhasan]

I meant: Windows 10 Enterprise 2016 LTSB