# SSL Error resulting in License Error - Graylog Enterprise

**URL:** <https://community.graylog.org/t/ssl-error-resulting-in-license-error-graylog-enterprise/9672>\
**Category:** Graylog Central (peer support)\
**Created:** [March 28, 2019, 1:53pm UTC](https://community.graylog.org/t/ssl-error-resulting-in-license-error-graylog-enterprise/9672 "2019-03-28T13:53:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![neeraj](https://avatars.discourse-cdn.com/v4/letter/n/e47c2d/32.png) [@neeraj](https://community.graylog.org/u/neeraj)\
**Post date:** [March 28, 2019, 1:53pm UTC](https://community.graylog.org/t/ssl-error-resulting-in-license-error-graylog-enterprise/9672/1 "2019-03-28T13:53:05Z")

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Hello,  
We are using the free Graylog Enterprise License version 2.4.6. Since the past few days we are getting a license violation error message in the Web UI.

 ![1](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/7/754621ec7882e1635415f15ad816582bdd29b1eb.jpeg)

Things i have verified:

- our volume of daily logs is **\< 1GB** per day.
- I am able to connect to [https://api.graylog.com](https://api.graylog.com) . Below is a snap of telnet command from the Graylog instance  
 ![PNG](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/2X/5/590f37edabf3d09fdf6874d69fe820f6fa086fc9.jpeg)

Output of CURL command:

> ubuntu@graylog:~$ curl -v -XGET [https://api.graylog.com](https://api.graylog.com)
> 
> - Rebuilt URL to: [https://api.graylog.com/](https://api.graylog.com/)
> - Hostname was NOT found in DNS cache
> - Trying 35.173.6.94…
> - Connected to [api.graylog.com](http://api.graylog.com) (35.173.6.94) port 443 (#0)
> - successfully set certificate verify locations:
> - CAfile: none  
> CApath: /etc/ssl/certs
> - SSLv3, TLS handshake, Client hello (1):
> - Unknown SSL protocol error in connection to [api.graylog.com:443](http://api.graylog.com:443)
> - Closing connection 0  
> curl: (35) Unknown SSL protocol error in connection to [api.graylog.com:443](http://api.graylog.com:443)

Thanks in advance

Thanks in advance

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**Author:** ![jan](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/jan/32/11_2.png) [@jan](https://community.graylog.org/u/jan)\
**Post date:** [March 28, 2019, 4:49pm UTC](https://community.graylog.org/t/ssl-error-resulting-in-license-error-graylog-enterprise/9672/2 "2019-03-28T16:49:25Z")

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your system does not contain any CA files - so the certificate can’t be verified …

please check your Graylog server.log it should give you some hints on this.

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**Author:** ![neeraj](https://avatars.discourse-cdn.com/v4/letter/n/e47c2d/32.png) [@neeraj](https://community.graylog.org/u/neeraj)\
**Post date:** [March 28, 2019, 5:26pm UTC](https://community.graylog.org/t/ssl-error-resulting-in-license-error-graylog-enterprise/9672/3 "2019-03-28T17:26:23Z")

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Hello Jan,  
Thanks. I am using the training VM ( OVA file) as ours is a test environment. I see lot of certificates present under /etc/ssl/certs directory. Is there any in particular that we should be looking for ?

/var/log/syslog doesn’t have anything related to ssl certs.

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/graylog/original/3X/c/7/c7c09c6b5099570133d6502b83f50ba4430de5b6.png) [@system](https://community.graylog.org/u/system)\
**Post date:** [April 11, 2019, 5:28pm UTC](https://community.graylog.org/t/ssl-error-resulting-in-license-error-graylog-enterprise/9672/4 "2019-04-11T17:28:48Z")

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Closed on April 11, 2019, 5:28pm UTC

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