# Connectivity issue with different Aerospike enterprise versions via AS client 5.1.11

**URL:** <https://discuss.aerospike.com/t/connectivity-issue-with-different-aerospike-enterprise-versions-via-as-client-5-1-11/9598>\
**Category:** General Discussion\
**Tags:** query, java, error\
**Created:** [July 15, 2022, 10:36am UTC](https://discuss.aerospike.com/t/connectivity-issue-with-different-aerospike-enterprise-versions-via-as-client-5-1-11/9598 "2022-07-15T10:36:56Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Badri](https://avatars.discourse-cdn.com/v4/letter/b/aeb1de/32.png) [@Badri](https://discuss.aerospike.com/u/Badri)\
**Post date:** [July 15, 2022, 10:36am UTC](https://discuss.aerospike.com/t/connectivity-issue-with-different-aerospike-enterprise-versions-via-as-client-5-1-11/9598/1 "2022-07-15T10:36:56Z")

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Hi,

We are using Aerospike enterprise versions 3.x to 5.x. Now we upgraded Aerospike client 4.1.3 → 5.1.11, after upgrade we are facing issue with 3.x version Aerospike servers. Please find below error for the same.

Caused by: com.aerospike.client.AerospikeException$Connection: Error -8: Failed to connect to [1] host(s): 10.56.110.175 3000 Error -1: Node BB92AB2B5565000 10.56.110.175 3000 version \< 4.9. This client requires server version \>= 4.9

Please help on this.

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**Author:** ![neelp](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/neelp/32/1369_2.png) [@neelp](https://discuss.aerospike.com/u/neelp)\
**Post date:** [July 15, 2022, 5:03pm UTC](https://discuss.aerospike.com/t/connectivity-issue-with-different-aerospike-enterprise-versions-via-as-client-5-1-11/9598/2 "2022-07-15T17:03:15Z")

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Please see the release notes for [Java Client 5.0.1](https://download.aerospike.com/download/client/java/notes.html#5.0.1). A bug fix in this release requires server versions 4.9+. It seems you will need to upgrade your servers to 4.9 (or later) to run with the Java Client release 5.1.11.

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**Author:** ![Badri](https://avatars.discourse-cdn.com/v4/letter/b/aeb1de/32.png) [@Badri](https://discuss.aerospike.com/u/Badri)\
**Post date:** [July 16, 2022, 4:51am UTC](https://discuss.aerospike.com/t/connectivity-issue-with-different-aerospike-enterprise-versions-via-as-client-5-1-11/9598/3 "2022-07-16T04:51:54Z")

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thank you for information

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**Author:** ![system](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/system/32/2274_2.png) [@system](https://discuss.aerospike.com/u/system)\
**Post date:** [July 16, 2023, 4:52am UTC](https://discuss.aerospike.com/t/connectivity-issue-with-different-aerospike-enterprise-versions-via-as-client-5-1-11/9598/4 "2023-07-16T04:52:32Z")

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