Error message displayed when opening Eclipse: "An error has occurred. See the log file null"

Question

I use Windows 10 and jre1.8.0_51. I don't know why when I start Eclipse it always displays an alert message "An error has occurred. See the log file null."

And I cannot open Eclipse thereafter. I tried to search Google and have no best solution. I uninstalled JRE and installed it again, but it still produces the same problem.

YOUR_WORKSPACE/.metadata/.log open file and please put the error trace. — Sumit Singh, Oct 05 '15 at 09:04
For more recent searchers, the above error can occur when trying to run older Eclipse installs with newer Java version (eg. 11, 16). — Thomas W, Jan 30 '22 at 10:40

score 22 · Answer 1 · answered Oct 05 '15 at 09:05

22

Try to launch it from the console like:

C:\path\to\eclipse\eclipse -clean

Also you try to can delete the file to fix the problem permanently as suggested here. Command would be something like below for windows.

del  YOUR_WORKSPACE/.metadata/.plugins/org.eclipse.core.resources/.snap

answered Oct 05 '15 at 09:05

Viraj Nalawade

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The "eclipse -clean" command did the magic for me :) (Win 8.1 here btw) – BAERUS Jun 06 '16 at 07:48
Update though: It seemed to be too late, my entire workspace went trash...^^ Built it up from fresh now. Sometimes I just should not update everything :/ – BAERUS Jun 06 '16 at 10:01
This also worked for with with Eclipse Neon on linux. – nsg Sep 27 '16 at 15:22
-clean fixed it for me. Thanks! – KenK Nov 01 '16 at 01:21
del YOUR_WORKSPACE/.metadata/.plugins/org.eclipse.core.resources/.snap worked for me – Toral Nov 29 '18 at 15:49

score 11 · Answer 2 · edited Oct 15 '20 at 07:01

11

I ran into the same problem. When I try running eclipse as Administrator, the problem went away.

edited Oct 15 '20 at 07:01

Raju

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answered Feb 10 '16 at 20:03

Luis Ramos

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Yeah, so of the `java.io` stuff that it was referencing on launch required admin privileges for me – Kellen Stuart Oct 25 '16 at 16:16

score 8 · Accepted Answer · edited Jun 29 '20 at 12:18

8

Had same issue. To resolve it : Go to Eclipse directory -> Open CMD -> eclipse -clean

worked well.

edited Jun 29 '20 at 12:18

Sunil Kaushik

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answered Apr 24 '16 at 14:45

Fidias

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score 5 · Answer 4 · edited Dec 16 '15 at 23:58

5

I had the same issue with Windows 10. Give full control to your user in security settings on the eclipse and workspace folders.

I also found the read only property was set on the eclipse and workspace folders, which I unset.

The log file can be found in the eclipse\configuration folder.

edited Dec 16 '15 at 23:58

insys

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answered Dec 16 '15 at 22:37

Bally

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score 4 · Answer 5 · edited Mar 10 '17 at 07:33

4

I deleted .metadata from the workspace and ran the eclipse as run as administrator and it worked for me.

edited Mar 10 '17 at 07:33

roottraveller

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answered Mar 10 '17 at 06:03

shilpa

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score 3 · Answer 6 · answered Aug 03 '18 at 20:11

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I found that running Eclipse (STS 3.9) as administrator worked, which is a permissions issue. Giving the required users read/write/execute permissions to the config and workspace folders did the trick (they couldn't write previously).

answered Aug 03 '18 at 20:11

Nielsvh

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score 1 · Answer 7 · answered Aug 10 '17 at 06:26

I too came across the same error. My log file says : Java.io.FileNotFoundException: C:\Eclipse\eclipse-jee-luna-SR2-win32-x86_64\eclipse\configuration\org.eclipse.osgi.manager.fileTableLock (Access is denied)

So, i copied entire eclipse in another folder and it worked for me.

So, for me the problem was write access, because eclipse need write across configuration folder, in my case eclipse was unzipped by some other user and i didn't have the access.

score 1 · Answer 8 · answered Aug 13 '18 at 10:08

1

I encountered the same problem, and then I found out that, the eclipse distribution works fine with JDK 8. I previously ran JDK 10 and I got this error. Uninstalling JDK 10 and installing JDK 8 fixed the issue for me.
Hope this helps!!

answered Aug 13 '18 at 10:08

Niranjan Agnihotri

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David Almeida · Answer 9 · 2023-07-05T07:27:36.857

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Make sure your java version is compatible with your eclipse version!

It is an easy solution that worked for me. Deleting the .metadata did not worked. I was using eclipse MARS 2.0 but set my JAVA_HOME to java 17. However, Mars does not support java 17. As soon as I switched it back to java 14 eclipse launched again.

edited Jul 05 '23 at 07:27

answered Oct 29 '22 at 19:17

David Almeida

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score 0 · Answer 10 · answered Jun 05 '16 at 21:43

Make sure your eclipse launch folder does not have read only property/attribute

My eclipse resides at below location and If I right click ->properties- checked attributes were read only. I unchecked read only and restarted eclipse. Issue was resolved. C:\Users\Ashish\Downloads\eclipse-jee-mars-2-win32-x86_64 (1)\eclipse

score 0 · Answer 11 · answered Dec 21 '16 at 06:05

0

Here I'm just share, if you can not copy file .metadata on mac because that file invisible (JUST on Mac issue), try this step:

compress your file .metadata backup
copy file .zip
paste file .zip to path/workspace
double click file .zip
done :-)

answered Dec 21 '16 at 06:05

Affa Musaffa

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score 0 · Answer 12 · answered Jan 07 '17 at 21:41

0

Open the eclipse.exe with the right mouse button and open with admin rights and that's it!

answered Jan 07 '17 at 21:41

Harun

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score 0 · Answer 13 · answered Jun 16 '17 at 14:27

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I had the same problem and deleting the file .metadata/.plugins/org.eclipse.core.resources/.snap and try it should work

answered Jun 16 '17 at 14:27

Prem S

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score 0 · Answer 14 · edited Sep 22 '17 at 14:37

0

Uninstall Java JDK
Reinstall JDK 8
Run Eclipse as administrator

edited Sep 22 '17 at 14:37

Stephen Rauch

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answered Sep 22 '17 at 14:12

M.Sobhy

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score 0 · Answer 15 · answered Nov 13 '17 at 09:13

0

Remove the .snap file from <WORKSPACE-DIRECTORY>\.metadata\.plugins\org.eclipse.core.resources

answered Nov 13 '17 at 09:13

Prakash

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score 0 · Answer 16 · answered Oct 24 '18 at 13:25

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The mentioned solutions didn't work for me under Windows OS. I just deleted .manager from eclipse\configuration\org.eclipse.core.runtime and from eclipse\configuration\org.eclipse.osgi and the issue was fixed.

answered Oct 24 '18 at 13:25

mtareq

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score 0 · Answer 17 · answered Apr 24 '19 at 20:56

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Delete the .metadata folder in eclipse. That should resolve the issue. The .metadata folder is recreated by eclipse once it is able to launch successfully.

answered Apr 24 '19 at 20:56

Nikhil Katre

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score 0 · Answer 18 · answered May 27 '20 at 04:53

I too got the same error in My Windows 10 pc while using Eclipse 2020 version

Just delete the .metadata folder and then try to run eclipse again it will solve the problem and run fine. .Metadata folder will get created once again by itself as we open eclipse.

score 0 · Answer 19 · answered Oct 30 '21 at 12:35

I uninstalled JRE and installed it again, but it still produces the same problem.

Turns out that my version of eclipse doesn't work with jdk17 (installed it using Amazon Corretto 17). So uninstalled Amazon Corretto 17 (automatically uninstalls jdk17 as well) and installed jdk11 using Amazon Corretto 11.

Thankfully worked for me! What I tried was similar to what you tried, but worth trying anyway.

score 0 · Answer 20 · answered Mar 26 '22 at 07:29

0

Re-install Eclipse or add vm path in your eclipse.ini file.

-vm
C:/<Your Path>/jdk1.8.0/jre/bin/javaw.exe

Note: Change javaw.exe path according to your system

answered Mar 26 '22 at 07:29

Nooras Fatima Ansari

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Error message displayed when opening Eclipse: "An error has occurred. See the log file null"

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