Skip to main content
Participating Frequently
October 20, 2017
Question

Lightroom Classic CC won't start in windows 10

  • October 20, 2017
  • 4 replies
  • 9559 views

This started a few days ago, LR crashes right after I click on its icon. I've reinstalled it several times, and even tried to start it as admin.

Nothing happens, and I upgraded to the latest version of windows yesterday (but it didn't work before that either).

I really need to get some work done and this is crippling and annoying. Any help is appreciated.

This topic has been closed for replies.

4 replies

Participating Frequently
November 18, 2017

So. After numerous reinstalls, cache cleanings and adobe cleans and 3 guys remoting in, I've finally gotten my Lightroom to start, and to import a backup of the next to latest catalogue.

It seems that it was something wrong with my user profile (or it could be a corrupt catalogue), so I made a new user and then it started to work. So that might help someone else?
Participant
November 12, 2020

How did yo umake a new user?

Participant
November 17, 2017

I updated to Windows 10 V 1709 last night.  After the update, Lightroom Classic CC and Photoshop CC will not start.  Prior to the update, everything worked fine.  When I try to start Lightroom Classic CC, I get the following error dialog:

I've uninstalled and reinstalled the Adobe Apps.  Not a fix.

I'll work the Lightroom issue first.  Getting a different error for Photoshop.

Rob_Cullen
Community Expert
Community Expert
November 17, 2017

Have you followed the advice at-

How to fix Lightroom launch error 'Could not call C function: private_load_AgCoreTech'.

Interested to know if the "Adobe Support Guy" was able to get it going?

Regards. My System: Windows-11, Lightroom-Classic 15.3, Photoshop 27.5, ACR 18.3, Lightroom 9.3, Lr-iOS 10.4.0, Bridge 16.0.3 .
Participant
November 17, 2017

I did try this. Still same error on start.  This info seems to be for LR 6 or LR CC.  Problems launching LR Classic CC and Photoshop CC are definitely as result of update to Windows V 1709.  (Having issues with other apps (itunes, etc.)  I've located a couple of compatible updates for some.)

I see many other folks having issues.

I've delayed contacting Adobe support.  I'm rather frustrated and might not be pleasant in chat or phone session. Dead in the water for now.

Rob_Cullen
Community Expert
Community Expert
November 6, 2017

Both posts above give us little to help with a diagnosis, "it didn't work before that either",

hence some links that might touch on their problems-

https://www.lightroomqueen.com/standard-lightroom-troubleshooting-steps/

Situations I have seen that prevent Lightroom from opening are-

1. A 'Crash' has left a file in place that indicates that Lightroom is already running. (You would normally see an error message for this)

The file has the suffix .LOCK and may be found next to your catalog location.

Delete this single .LOCK file and try restarting Lightroom.

Lightroom catalog cannot be opened

2. (And I just experienced this in the last 30 minutes!   Windows-10 & Classic 7.0.1)

Open the Task Manager  ( Windows key+ x, t)

You may see multiple listings for Adobe Photoshop Lightroom Classic.

Right-click on each of these entries and choose [Exit] 

Try restarting Lightroom.

Restarting the computer should achieve the same result.

lightroom remaining

3. A corrupt preferences file.

To reset the preferences file- As you start Lightroom- Hold down- Mac [Shift+Option] , Windows [Shift+Alt]

Resetting Preferences in Lightroom CC/6

4. A corrupt Previews folder. (You would normally see an error message for this)

The Previews folder can be deleted and Lightroom can re-build the previews.

Lightroom encountered an error when reading from its preview cache and needs to quit

5. And the frequent posted problem of GPU incompatibility.

Turning off Lightroom’s GPU preferences even when crashing on startup.

Adobe Lightroom GPU Troubleshooting and FAQ

6. Folder permissions.

Error: 'Unexpected error opening catalog' occurs in Lightroom after Windows 10 upgrade.

Regards. My System: Windows-11, Lightroom-Classic 15.3, Photoshop 27.5, ACR 18.3, Lightroom 9.3, Lr-iOS 10.4.0, Bridge 16.0.3 .
Participating Frequently
November 6, 2017

None of the above "solutions" has helped me start my lightroom.

I'm running the latest build of wiindows 10 and I have the exact same problem with lightroom on 2 computers. I've reinstalled lightroom, deleted all preferenses, checked for lock-files and whatnot. Nothing seems to work.

Community Expert
November 6, 2017

Did you get any error messages?

Are there any entries in the Windows application log?

How to Check the Application Event Log for Errors

Axel

My System: Intel i7-8700K - 64GB RAM - NVidia Geforce RTX 3060 - Windows 11 Pro 25H2 -- LR-Classic 15 - Photoshop 27 - Nik Collection 9 - PureRAW 6 - Topaz Photo AI
Participant
November 5, 2017

Both Lightroom Classic and CC both crash on start. I'm stuck and have know idea either.

Participant
November 6, 2017

Sorry patricko8839049​ this won't help you, I don't think. I just wanted to let you know that after my panic post my smart brain kicked in and said "why don't you restart your computer" at least for me that fixed the issue.

Participating Frequently
November 7, 2017

Hahaha

The amount of times I've rebooted... Nope, didn't do the trick.

Right now I have an Adobe support guy connected by remote, but it's still not working.