# Cannot Start .\\elasticsearch.bat on windows
**URL:** https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037
**Category:** Elasticsearch
**Created:** [September 23, 2022, 3:59pm UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037 "2022-09-23T15:59:50Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@miawu8](https://discuss.elastic.co/u/miawu8)
#### Post date: [September 23, 2022, 3:59pm UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037/1 "2022-09-23T15:59:50Z")
Last month I installed V8.3.2 on windows 2022, everything was ok, but today I stop and deleted V8.3.2, and downloaded 8.4.2 from the official website, use the same config, the system reported an error and could not start, the error is:
```auto
PS D:\Elastic\elasticsearch-01\bin> .\elasticsearch.bat
Exception in thread "main" java.lang.NoClassDefFoundError: org/elasticsearch/cli/ProcessInfo
at org.elasticsearch.launcher.CliToolLauncher.main(CliToolLauncher.java:52)
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.cli.ProcessInfo
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 1 more
```
how should I solve it? Is it because I deleted the old version?
---
### Author:  [@stephenb](https://discuss.elastic.co/u/stephenb)
#### Post date: [September 23, 2022, 9:49pm UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037/2 "2022-09-23T21:49:23Z")
Try to go up 1 directory and run
`.\bin\elasticsearch.bat`
---
### Author:  [@miawu8](https://discuss.elastic.co/u/miawu8)
#### Post date: [September 24, 2022, 4:36am UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037/3 "2022-09-24T04:36:42Z")
thank for your reply, but still same error:
```auto
PS D:\Elastic\elasticsearch-01> .\bin\elasticsearch.bat
Exception in thread "main" java.lang.NoClassDefFoundError: org/elasticsearch/cli/ProcessInfo
at org.elasticsearch.launcher.CliToolLauncher.main(CliToolLauncher.java:52)
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.cli.ProcessInfo
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 1 more
```
---
### Author:  [@stephenb](https://discuss.elastic.co/u/stephenb)
#### Post date: [September 24, 2022, 5:04am UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037/4 "2022-09-24T05:04:15Z")
Did you just unzip or do the installer?
Did you follow [this](https://www.elastic.co/guide/en/elasticsearch/reference/current/zip-windows.html#install-windows)?
Did you completely clean up or are you trying to upgrade?
Are trying to set your own JDK?
Are there environment variable set?
Is `ES_JAVA_HOME` still set somewhere? If you want to use the included JDK make sure that is not set.
Oh and @miawu8 Welcome to the community!
---
### Author:  [@miawu8](https://discuss.elastic.co/u/miawu8)
#### Post date: [September 24, 2022, 5:17am UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037/5 "2022-09-24T05:17:02Z")
Thanks for your suggestion!
I re-checked all the steps and I found the zip file 'elasticsearch-8.4.2-windows-x86\_64' use 'sha512' check fail 😱, I guess should be an error in the download process, after re-downloading and decompressing everything is ok.
I made a low-level mistake and wasting your time, I'm so sory 😅 .
Thanks again.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 22, 2022, 5:17am UTC](https://discuss.elastic.co/t/cannot-start-elasticsearch-bat-on-windows/315037/6 "2022-10-22T05:17:07Z")
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