# Aerospike C# Client Release 4.0.1 (October 28, 2020)

**URL:** <https://discuss.aerospike.com/t/aerospike-c-client-release-4-0-1-october-28-2020/7972>\
**Category:** Releases (Server, Client & Tools)\
**Created:** [October 29, 2020, 12:19am UTC](https://discuss.aerospike.com/t/aerospike-c-client-release-4-0-1-october-28-2020/7972 "2020-10-29T00:19:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mcoberly](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.aerospike.com/mcoberly/32/637_2.png) [@mcoberly](https://discuss.aerospike.com/u/mcoberly)\
**Post date:** [October 29, 2020, 12:19am UTC](https://discuss.aerospike.com/t/aerospike-c-client-release-4-0-1-october-28-2020/7972/1 "2020-10-29T00:19:31Z")

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[Aerospike C# client version 4.0.1](https://www.aerospike.com/download/client/csharp/notes.html#4.0.1)was released on October 28, 2020.

This minor release adds 2 bug fixes.

- A bug affecting this version of the C# client [has been identified](https://discuss.aerospike.com/t/scan-bug-identified-client-1637/9095). If your application uses scans, but does not use `Policy.priority` , `ScanPolicy.scanPercent` or `ScanPolicy.failOnClusterChange` , you can safely upgrade to C# client 4.2.7. We strongly recommend that you do so at the earliest opportunity.

#### Fixes

- CLIENT-1370 Fix NullReferenceException in async batch that can happen when multiple retries occur.
- Remove extraneous newline in ClusterStats ToString().