- Failed to provision volume with StorageClass "azurefile-premium": failed to create share andy-mg1121-dynamic-pvc-1a7b2813-d1b7-11e8-9e96-000d3a03e16b in account f7228f99bcde411e8ba4900: failed to create file share, err: storage: service returned error: StatusCode=400, ErrorCode=InvalidHeaderValue, ErrorMessage=The value for one of the HTTP headers is not in the correct format. ([#69718](https://...

- Multiple Kubernetes clusters can now share the same resource group
    - When upgrading from previous releases, issues will arise with public IPs if multiple clusters share the same resource group. To solve these problems, make the following changes to the cluster:

- Fixed stale SMB mount issue when SMB file share is deleted and then unmounted. ([#121851](https://github.com/kubernetes/kubernetes/pull/121851), [@andyzhangx](https://github.com/andyzhangx))

- Adds node event handlers to dual stack kube-proxy implementation to fix Topology Aware Hints. ([#101054](https://github.com/kubernetes/kubernetes/pull/101054), [@robscott](https://github.com/robscott)) [SIG Network]
- Azurefile: Normalize share name to not include capital letters ([#100731](https://github.com/kubernetes/kubernetes/pull/100731), [@kassarl](https://github.com/kassarl)) [SIG Cloud Provider and Storage]

  in kube-apisever and kube-controller-manager pods. Instead, it shifted to supporting the
  mounting of /etc/pki/ca-trust and /etc/pki/tls/certs. The locations /etc/ca-certificate,
  /usr/share/ca-certificates, /usr/local/share/ca-certificates, and /etc/ssl/certs continued
  to be supported. ([#124361](https://github.com/kubernetes/kubernetes/pull/124361), [@neolit123](https://github.com/neolit123))

- Fix: statle smb mount issue when smb file share is deleted and then unmount ([#121851](https://github.com/kubernetes/kubernetes/pull/121851), [@andyzhangx](https://github.com/andyzhangx)) [SIG Storage]

* fix detach azure disk back off issue which has too big lock in failure retry condition ([#76573](https://github.com/kubernetes/kubernetes/pull/76573), [@andyzhangx](https://github.com/andyzhangx))
* specify azure file share name in azure file plugin ([#76988](https://github.com/kubernetes/kubernetes/pull/76988), [@andyzhangx](https://github.com/andyzhangx))

- Client-go uses the same HTTP client for all the generated groups and versions, allowing to share customized transports for multiple groups versions. ([#105490](https://github.com/kubernetes/kubernetes/pull/105490), [@aojea](https://github.com/aojea))

### Bug or Regression

- Azurefile: Normalize share name to not include capital letters ([#100731](https://github.com/kubernetes/kubernetes/pull/100731), [@kassarl](https://github.com/kassarl)) [SIG Cloud Provider and Storage]

## Changelog since v1.18.14

## Changes by Kind

### Bug or Regression

- Fix Azure file share not deleted issue when the namespace is deleted ([#97417](https://github.com/kubernetes/kubernetes/pull/97417), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider and Storage]