# Error after upgrade
**URL:** https://discuss.elastic.co/t/error-after-upgrade/140015
**Category:** Kibana
**Created:** [July 14, 2018, 12:49am UTC](https://discuss.elastic.co/t/error-after-upgrade/140015 "2018-07-14T00:49:14Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@adwaitjoshi](https://discuss.elastic.co/u/adwaitjoshi)
#### Post date: [July 14, 2018, 12:49am UTC](https://discuss.elastic.co/t/error-after-upgrade/140015/1 "2018-07-14T00:49:14Z")
I was running Elastic 6.0 and Kibana 6.0 with x-pack installed for monitoring.
I upgraded it to 6.3 successfully. Then I removed the x-pack plugins and started the cluster. It ran ok, Then for whatever reason I decided to run a license delete command in kibana (since I dont plan on using the security features) since then I cannot get Kibana to work. It starts but then it gives me an error that the elastic cluster did not respond with license information. Unable to connect to localhost:9200 how do I solve this problem?
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### Author:  [@adwaitjoshi](https://discuss.elastic.co/u/adwaitjoshi)
#### Post date: [July 14, 2018, 1:10am UTC](https://discuss.elastic.co/t/error-after-upgrade/140015/2 "2018-07-14T01:10:55Z")
I solved the problem by starting a trial license. Thanks,
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### Author:  [@cjcenizal](https://discuss.elastic.co/u/cjcenizal)
#### Post date: [July 17, 2018, 6:16pm UTC](https://discuss.elastic.co/t/error-after-upgrade/140015/3 "2018-07-17T18:16:24Z")
Great! Thanks for the update.
CJ
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [August 14, 2018, 6:16pm UTC](https://discuss.elastic.co/t/error-after-upgrade/140015/4 "2018-08-14T18:16:30Z")
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