# AWS CloudHSM known issues
<a name="KnownIssues"></a>

AWS CloudHSM has the following known issues. Choose a topic to learn more.

**Topics**
+ [Known issues for all HSM instances](ki-all.md)
+ [Known issues for hsm1.medium](ki-hsm1-medium.md)
+ [Known issues for hsm2m.medium](ki-hsm2m-medium.md)
+ [Known issues for the PKCS \$111 library](ki-pkcs11-sdk.md)
+ [Known issues for the JCE SDK](ki-jce-sdk.md)
+ [Known issues for the OpenSSL Dynamic Engine](ki-openssl-sdk.md)
+ [Known issues for the Key Storage Provider (KSP)](ki-ksp-sdk.md)
+ [Known issues for the OpenSSL Provider](ki-openssl-provider-sdk.md)
+ [Known issues for Amazon EC2 instances running Amazon Linux 2](ki-al2.md)
+ [Known issues for integrating third-party applications](ki-third-party.md)
+ [Known issues for cluster modification](ki-cluster-modification.md)
+ [Known issues of operation failure using AWS CloudHSM client version 5.12.0 on hsm2.medium](ki-hsm2-old-sdk.md)