AzureRetirement

Azure App Service, Functions and Logic Apps: TLS 1.0 and 1.1 retirement

After 31 May 2027, Azure App Service, Azure Functions, and Azure Logic Apps no longer accept connections that use TLS 1.0 or TLS 1.1. Clients need to support TLS 1.2 or later.

Retires 31 May 2027In about 7 months, 31 May 2027

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What breaks

After 31 May 2027, Azure App Service, Azure Functions, and Azure Logic Apps no longer accept connections that use TLS 1.0 or TLS 1.1. Any client, application, or service that still uses these TLS versions is unable to connect to these services after that date. Resources in a subscription that still allow TLS 1.0 or 1.1 are listed in the Azure Retirement Workbook.

Who is affected

Affected versions

1.0
1.1

Matching resource types

microsoft.web/sites
azurerm_linux_web_app
azurerm_windows_web_app
azurerm_linux_function_app
azurerm_windows_function_app

Fields the check reads

properties.siteconfig.mintlsversion
site_config.minimum_tls_version

Detected by the estate check from

Terraform state or plan (JSON)
ARM template

Check your estate for this

What to do

Find the resources in your subscription that still allow TLS 1.0 or 1.1 in the Azure Retirement Workbook.
Review the applications and services that connect to App Service, Functions, or Logic Apps and make sure they support TLS 1.2 or later before the retirement date.
Test client compatibility with TLS 1.2 or later.
Review the TLS version deprecation overview for configuration guidance.
For common questions, see the Q&A for App Service, Functions and Logic Apps.

Replacement

TLS 1.2 or later

Sources

Official sourceazure.microsoft.comOfficial
Additional sourceaka.msOfficial
Additional sourceaka.msOfficial
Additional sourceaka.msOfficial
Additional sourceaka.msOfficial
Additional sourceaka.msOfficial

Last checked against the first source in this list on 12 Nov 2026.

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Last checked 12 Nov 2026 · Added 13 Nov 2026 · Changelog for this item