# Error: Could not find or load main class Files - Logstash installation failed

**URL:** <https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473>\
**Category:** Logstash\
**Created:** [March 29, 2019, 5:54am UTC](https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473 "2019-03-29T05:54:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Sikha\_Arun](https://avatars.discourse-cdn.com/v4/letter/s/8797f3/32.png) [@Sikha\_Arun](https://discuss.elastic.co/u/Sikha_Arun)\
**Post date:** [March 29, 2019, 5:54am UTC](https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473/1 "2019-03-29T05:54:46Z")

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Cannot install logstash on my windows 10 system . Error: Could not find or load main class Files  
Caused by: java.lang.ClassNotFoundException: Files

 ![class%20error](https://us1.discourse-cdn.com/elastic/original/3X/2/f/2f182917e1d876467141631299089c3b1cc24d05.png)

Logstash.conf file is as follows

![conf%20file](https://us1.discourse-cdn.com/elastic/original/3X/f/8/f82411a62cb26f91f7fc3576bb3a99b3a26f316d.png)

JAVA\_HOME environment variables is there .

 ![java%20home](https://us1.discourse-cdn.com/elastic/original/3X/8/0/80c03a6c2526e6d1e8e00354f20673f15997605b.png)

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<div class="post-metadata">

**Author:** ![Sikha\_Arun](https://avatars.discourse-cdn.com/v4/letter/s/8797f3/32.png) [@Sikha\_Arun](https://discuss.elastic.co/u/Sikha_Arun)\
**Post date:** [March 29, 2019, 7:38am UTC](https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473/2 "2019-03-29T07:38:59Z")

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Java version is getting as expected

C:\Users\ACER\>java -version  
java version "11.0.1" 2018-10-16 LTS  
Java(TM) SE Runtime Environment 18.9 (build 11.0.1+13-LTS)  
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.1+13-LTS, mixed mode)

Then what is the issue with it ?

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**Author:** ![peter.tu](https://avatars.discourse-cdn.com/v4/letter/p/90db22/32.png) [@peter.tu](https://discuss.elastic.co/u/peter.tu)\
**Post date:** [March 29, 2019, 12:30pm UTC](https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473/3 "2019-03-29T12:30:49Z")

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I had a similar error message yesterday while trying to install Logstash. Moving the entire Logstash folder out of the Program Files directory and on to the C: drive fixed it for me.

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**Author:** ![Sikha\_Arun](https://avatars.discourse-cdn.com/v4/letter/s/8797f3/32.png) [@Sikha\_Arun](https://discuss.elastic.co/u/Sikha_Arun)\
**Post date:** [March 29, 2019, 1:02pm UTC](https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473/4 "2019-03-29T13:02:47Z")

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Did the same, Logstash folder moved to C:/ . Now its showing new error .I think this error is regarding java version ? My java version is "11.0.1" 2018-10-16 LTS . logstash doesn't work with jdk 9+ ?

 ![new%20error](https://us1.discourse-cdn.com/elastic/original/3X/4/6/46938153229bd6b045f55cdd653145033431ede9.png)

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 26, 2019, 1:02pm UTC](https://discuss.elastic.co/t/error-could-not-find-or-load-main-class-files-logstash-installation-failed/174473/5 "2019-04-26T13:02:48Z")

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