P: Headlights.dll error

[Inus5FD9]

After downloading the new version 11.0 of LRC, it will not start. I get an error message: The procedure entry point SetThreadDescription point could not be located in the dynamic link library ......... Headlights.dll.

Have googled for solution and have unistalled, restarted and installed again - no luck!

Please help.

[Rikk Flohr: Photography]

Try following this procedure in this order and see if it cures the issue:

This procedure works for both Lightroom Classic and Lightroom Desktop.

If you are using Lightroom Desktop it can change the location of your local storage. Please review this setting after resetting preferences. 

Reset Procedure:

1. Close Lightroom.

2. Hold down [Alt/Opt]+[Shift] while restarting Lightroom.

3. Overwrite the Preferences when prompted by the dialog.

4. Close Lightroom.

5. Restart Lightroom.

Then

Clean Lightroom Install Procedure

1. Close Lightroom
2. Restart the computer
3. Use the Adobe Creative Cloud App to uninstall Lightroom
4. Restart the computer
5. Install Lightroom via the Creative Cloud App without launching any other programs.
6. Restart the computer
7. Launch Lightroom
8. Wait 5 minutes

[Inus5FD9]

Hi,



I tried your solution, but it did not work.

As soon as I follow step 2 of the Reset Procedure, the error message pops
up.

I then proceeded to do the "Clean Lightroom Install Procedure", but also did
not work.

Any other suggestions?

How do I go back to previous version of LRC?



Inus Marais

[Moderator] 

[personal information removed per policy -  

https://community.adobe.com/t5/adobe-community-professionals/email-signatures-and-personal-informati... 

[This is a public forum, not Adobe support, please do not post personal information] 

[Inus5FD9]

I tried your solution, but it did not work.

As soon as I follow step 2 of the Reset Procedure, the error message pops up.

I then proceeded to do the “Clean Lightroom Install Procedure”, but also did not work.

Any other suggestions?

How do I go back to previous version of LRC?

[Axel Matt]

Please see here if you'll go back to a previous version.

https://helpx.adobe.com/download-install/using/install-previous-version.html

In this document it will be shown for Photoshop, but it's the same for Lightroom.

[Inus5FD9]

Thanks Axel,

It worked and at least now I can keep on working on my photos with the previous version.

Hope to download v11 soon, but it seems there are (a few) bugs they need to sort first.

Thanks!

[Rikk Flohr: Photography]

Can you supply your installed Windows 10 Version number?

[Inus5FD9]

Windows 10 Enterprise 2016 LTSB, updated to version 2021-10

[Rikk Flohr: Photography]

Some of our customers have reported success clearing this error by using the the Adobe Cleaner Tool during their reinstall. 

https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html 

[Rikk Flohr: Photography]

Investigating

[Ivan CS Kuznetsoff]

Same problem, Windows 10 ltsb 1607. Adobe Cleaner Tool did not help.

Had to roll back to LrC 10.4.

[duthier21862271amtg]

Bonjour,

Suite à un changement de PC j'ai installé lightroom sur ce dernier, l'installation se fait sans problème mais à l'ouverture de l'application, j'ai un message point d'entrée introuvable, voir copie d'écran. 

Quelle est la solution ?

Merci de votre aide.

Fred

[GoldingD]

see: https://community.adobe.com/t5/lightroom-classic-bugs/p-headlights-dll-error/idi-p/12475711

[Inus5FD9]

Sorry, no solution yet. Nothing works.

Will need to wait for update??

[tonyc0101]

Same problem here also. I was able to update LR to v.11 with no problems on my home computer, but could not do it on my work computer, which are both Windows 10. It downloads fine but gives me the "...Headlights..." error when trying to start LR.

[Inus5FD9]

Still no joy! Lightroom issued an update version 11.0.1 (all bugs fixed!??), but still the same "headlights.dll" problem.

Had to revert to version 10.4 to work.

[Inus5FD9]

Hi,

We are 1 update later and still I can not use the new LRC. Will not download because of the headlights.dll error.

Is there someone with a solution please?

[Rikk Flohr: Photography]

Updates to the Adobe Photography Products were released today and contain a fix for this issue. Please install the update via your Creative Cloud Desktop App or your respective App Store. 

Note: 

You may need to refresh the Creative Cloud App for desktop software to show an update available.  ([Ctrl/Cmd]+[Alt/Opt]+ [ R ])

For Mobile downloads, it may take several days for the update to appear in your respective App Stores.

Thank you for your patience. 

[Inus5FD9]

Thank you Rikk!!

It is working now - bug fixed - and I can also now enjoy the new masking features.

Thank you for the fixes.

[tonyc0101]

The update worked!! Thank you!

[Ivan CS Kuznetsoff]

Fixed! Thank you very much!