Lightroom Classic (current version) wont open/launch on Windows 11

New development! I do have some files on a Synology NAS and I noticed that it was furiously clicking away when it should be silent. I then wondered if Lightroom was accessing that for some reason (it should not be). So I shut down the NAS and then closed LR via Task Manager as it was running in the background. I then restarted it and it WORKED! 

So if you’re having this issue and you have a NAS or external drives, try disconnecting them and see if that helps? 
 

2 days later, I’m back again. LRc stalled and quit responding, so I closed it. No error messages. After trying to restart it the problem is back, it’s opening only in the background, again no error messages. Since I just went through this 2 days ago, I already know that restarting, resetting preferences etc. does not work. It very frustrating and now I have an actual job I need to get working on. So as suggested here, I will wait and see if it ultimately opens. 

LRC 15.4.1 (Windows 11) Lightroom will not open but runs in background. I'm going to leave my comments in case it helps to diagnose for anybody. I used Task Manager to end process, but no help there. I repeatedly restarted the program and also restarted my PC. No matter what I did Lightroom would always open up in the background. While trying to diagnose I saw some advice saying to reset preferences, which I did. That did not work. Then I saw advice that said to try and open up Lightroom from a backup catalog. I did have a fairly recent backup catalog so I tried that and it worked. So I came to the conclusion that my catalog was probably corrupted. So, I deleted my current catalog and replaced it with my backup and at the time being all is good. I did lose a full day of work, which was a bummer. I have seen some others posting here and it sounds like if you let Lightroom run all night, the problem might resolve itself. I did not try that, but the comments below make me wonder.  

An additional note to mention is something that happened right before this event. I've been using a Windows Voice Access app for dictation, without realizing that my voice might activate something in LRC. When I said the term “OK” all of a sudden Lightroom started trying to search my photos for people/faces. Evidently when you are in the library tab and you hit the letter “O” that starts some sort of search for faces. Once I figured out how to turn that off (G) all seemed to be good.  Now that I see others with the same issue of LRC not opening (but  then starting after leaving it running all night) I wonder if Lightroom was stalled because it was trying to search my entire catalog for people somehow? (even though I stopped that process) No way to know, but it was a strange coincidence. 

So for now, I’m up and running. 

I have just experienced the same issue this morning. I'm going to leave my comments in case it helps to diagnose for anybody. I repeatedly restarted the program and also restarted my PC, windows. No matter what I did Lightroom would always open up in the background. While trying to diagnose I saw some advice saying to reset preferences which I did. That did not work. Then I saw advice that said to try and open up Lightroom from a backup catalog. I did have a fairly recent backup catalog so I tried that and it worked. So I came to the conclusion that my catalog was probably corrupted. So I deleted my current catalog and replaced it with my backup and at the time being all is good. I did lose a full day of work, which was a bummer. 
An additional note to mention is something that happened right before this event. I've been using a Windows Voice Access app for dictation. When I said the term “OK” all of a sudden Lightroom started trying to search my photos for people/faces. Evidently when you are in the library tab and you hit the letter “O” that starts some sort of search for faces. Once I figured out how to turn that off all seemed to be good. Now that I read this thread, I wonder if Lightroom was stalled because it was trying to search my entire catalog for people somehow? (even though I stopped that process) No way to know, but was a strange coincidence. 

A number of people have reported that Lightroom Classic doesn’t open normally, and if you wait for a few hours (one person needed 12 hours) that it starts up and works fine and then opens normally after that.

라이트룸을 실행할때마다 한번에 이상없이 실행하지 못하고 몇 번이고 응답없음 상태가 되어 강제종료 후에 재실행하기를 반복해야 간신히 실행 됩니다.

뭐가 문제인지 모르겠습니다.

PC는 포맷 후 윈도우11을 설치한지 2주 정도 된 거 같습니다.

Please quote the exact complete word-for-word error messages. We need to know both the error message when it  crashes and the error message from Creative Cloud when you try to uninstall.

i went to creative cloud but there is no option to uninstall/reinstall.

The uninstall option appears when you click on Apps on the left

Can’t open the program. I get sorry an error occurred.  I sent a response to Adobe but no answer on their part.  i went to creative cloud but there is no option to uninstall/reinstall.

I am on a Windows 11 machine, but when I go in uninstall in Windows settings, it just brings me to creative cloud which tells me my system is incompatible.

Are you talking about Lightroom (Lr icon) or Lightroom Classic (LrC icon)?

If LrC, many people have found that letting it run for a long time causes LrC to eventually launch (one person needed 12 hours).

If Lr, you are in the wrong forum, you need to post in the Lightroom (Ecosystem) forum.

Lightroom for MAC does not launch. Adobe creative cloud gives me a message saying there was an issue with loading and cannot show content. I have reset preferences and have uninstalled and installed Lightroom but it still will not launch