Issues using TLS

Question

Issues using TLS

ram doig 40

If we change the minimum TLS version to 1.2 in configuration to our storage account, then we will have issues with our virtual machine or web applications (IIS, MSSQL Server, etc.)

We want to be sure to change this configuration about your high recommendation (Feb 3, 2026).

Venkatesan S 3,645 Reputation points Microsoft External Staff Moderator

2026-01-16T15:12:54.76+00:00
Hi ram doig,

Thanks for reaching out in Microsoft Q&A forum,

If we change the minimum TLS version to 1.2 in configuration to our storage account, then we will have issues with our virtual machine or web applications (IIS, MSSQL Server, etc.)

Setting the minimum TLS version to 1.2 on your Azure Storage Account won't affect your virtual machines or web apps (like IIS or SQL Server), provided they're using current, supported operating systems and app frameworks.

Issues arise solely from legacy components explicitly restricted to TLS 1.0/1.1, such as unpatched older Windows (pre-2012), outdated .NET versions, or custom code lacking TLS 1.2 support. The storage account change targets client-to-storage encryption negotiation only, leaving intra-VM operations (e.g., local IIS-to-MSSQL) untouched.

Azure mandates TLS 1.2 as the minimum for Blob Storage on February 3, 2026, aligning with your timeline. Proactive enforcement now avoids last-minute disruptions. Storage accounts already on TLS 1.2 face no impact from this deadline

Reference:

Migrate to Transport Layer Security (TLS) 1.2 for Azure Blob Storage - Azure Storage | Azure Docs

Kindly let us know if the above helps or you need further assistance on this issue.

Please “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

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Venkatesan S 3,645 Reputation points Microsoft External Staff Moderator

2026-01-16T15:12:54.76+00:00

Hi ram doig,

Thanks for reaching out in Microsoft Q&A forum,

If we change the minimum TLS version to 1.2 in configuration to our storage account, then we will have issues with our virtual machine or web applications (IIS, MSSQL Server, etc.)

Setting the minimum TLS version to 1.2 on your Azure Storage Account won't affect your virtual machines or web apps (like IIS or SQL Server), provided they're using current, supported operating systems and app frameworks.

Issues arise solely from legacy components explicitly restricted to TLS 1.0/1.1, such as unpatched older Windows (pre-2012), outdated .NET versions, or custom code lacking TLS 1.2 support. The storage account change targets client-to-storage encryption negotiation only, leaving intra-VM operations (e.g., local IIS-to-MSSQL) untouched.

Azure mandates TLS 1.2 as the minimum for Blob Storage on February 3, 2026, aligning with your timeline. Proactive enforcement now avoids last-minute disruptions. Storage accounts already on TLS 1.2 face no impact from this deadline

Reference:

Migrate to Transport Layer Security (TLS) 1.2 for Azure Blob Storage - Azure Storage | Azure Docs

Kindly let us know if the above helps or you need further assistance on this issue.

Please “up-vote” wherever the information provided helps you, this can be beneficial to other community members.

Answer 1

Changing the minimum TLS version of the Azure Storage account to TLS 1.2 should not impact your virtual machines or web applications as long as the operating systems, frameworks, and clients they use already support TLS 1.2, which is the case for all supported versions of Windows Server, IIS, .NET, and Microsoft SQL Server. TLS 1.2 has been the default and recommended secure protocol for several years, and modern Azure services and Microsoft platforms are designed to operate with it enabled.

Potential issues would only arise if there are legacy applications, outdated operating systems, old SQL Server versions, or custom integrations that are explicitly limited to TLS 1.0 or 1.1 when connecting to the storage account. In such cases, those components would need to be updated or reconfigured before enforcing TLS 1.2. This change does not affect internal VM operations by itself; it only affects how clients negotiate encryption when accessing the storage account endpoints.

If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

hth

Marcin

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Issues using TLS

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