SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume failing

## Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1587058
Build error leg or test failing: System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume
Pull request: https://github.com/dotnet/runtime/pull/133409

## Error Message

**DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK** otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

Fill the error message using [step by step known issues guidance](https://github.com/dotnet/arcade/blob/main/Documentation/Build%20Analysis/KnownIssueJsonStepByStep.md).

```json
{
"ErrorMessage": "System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume [FAIL]",
"BuildRetry": false,
"ExcludeConsoleLog": false
}
```

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058
**Error message validated:** `[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume [FAIL] Assert.Equal() Failure: Values diffe Expected: True`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 9/8/2026 1:36:54 PM UTC

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1588153](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588153)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588153&view=ms.vss-test-web.build-test-results-tab&runId=43834550&resultId=173206)|dotnet/runtime#133424|
|[1587058](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058&view=ms.vss-test-web.build-test-results-tab&runId=43800736&resultId=192017)|dotnet/runtime#133409|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|2|2|2|

### Known issue validation
**Build: :mag_right:** https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058
**Error message validated:** `[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume [FAIL]`]
**Result validation:** :white_check_mark: Known issue matched with the provided build.
**Validation performed at:** 9/9/2026 11:42:57 AM UTC

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1588153](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588153)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588153&view=ms.vss-test-web.build-test-results-tab&runId=43834550&resultId=173206)|dotnet/runtime#133424|
|[1587058](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058&view=ms.vss-test-web.build-test-results-tab&runId=43800736&resultId=192017)|dotnet/runtime#133409|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|2|2|2|

### Report

|Build|Repository|Test|Pull Request|
|---|---|---|---|
|[1597027](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597027)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597027&view=ms.vss-test-web.build-test-results-tab&runId=44087896&resultId=171507)|dotnet/runtime#133930|
|[1596419](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596419)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1596419&view=ms.vss-test-web.build-test-results-tab&runId=44072026&resultId=174777)|dotnet/runtime#133905|
|[1595666](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595666)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1595666&view=ms.vss-test-web.build-test-results-tab&runId=44056890&resultId=180713)|dotnet/runtime#133875|
|[1593908](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593908)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593908&view=ms.vss-test-web.build-test-results-tab&runId=43996394&resultId=174569)|dotnet/runtime#133774|
|[1593861](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593861)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593861&view=ms.vss-test-web.build-test-results-tab&runId=43994610&resultId=164258)|dotnet/runtime#133655|
|[1593707](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593707)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1593707&view=ms.vss-test-web.build-test-results-tab&runId=43990170&resultId=164547)|dotnet/runtime#133764|
|[1592930](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592930)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592930&view=ms.vss-test-web.build-test-results-tab&runId=43972454&resultId=174389)|dotnet/runtime#133028|
|[1592602](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592602)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592602&view=ms.vss-test-web.build-test-results-tab&runId=43964840&resultId=171773)|dotnet/runtime#133690|
|[1592289](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592289)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1592289&view=ms.vss-test-web.build-test-results-tab&runId=43955336&resultId=201581)|dotnet/runtime#133606|
|[1591273](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591273)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1591273&view=ms.vss-test-web.build-test-results-tab&runId=43927386&resultId=116287)|dotnet/runtime#132115|
|[1590947](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590947)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590947&view=ms.vss-test-web.build-test-results-tab&runId=43919602&resultId=173424)|dotnet/runtime#133598|
|[1590840](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590840)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590840&view=ms.vss-test-web.build-test-results-tab&runId=43916510&resultId=163781)|dotnet/runtime#133593|
|[1588729](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588729)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588729&view=ms.vss-test-web.build-test-results-tab&runId=43853878&resultId=167519)|dotnet/runtime#133342|
|[1588153](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588153)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1588153&view=ms.vss-test-web.build-test-results-tab&runId=43834550&resultId=173206)|dotnet/runtime#133424|
|[1587058](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1587058&view=ms.vss-test-web.build-test-results-tab&runId=43800736&resultId=192017)|dotnet/runtime#133409|
|[1581157](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1581157)|dotnet/runtime|[System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume](https://dev.azure.com/dnceng-public/public/_build/results?buildId=1581157&view=ms.vss-test-web.build-test-results-tab&runId=43622710&resultId=162189)|dotnet/runtime#133099|
#### Summary
|24-Hour Hit Count|7-Day Hit Count|1-Month Count|
|---|---|---|
|3|14|16|

Start with the failing System.Net.Security.Tests.SslStreamTlsResumeTests.DifferentEncryptionPolicy_NoResume test and inspect the linked build results for the Assert.Equal failure. Trace the differing encryption policies and TLS resumption behavior, then confirm the test passes consistently across the reported builds without masking the failure.

Written by the indexing model from the issue text.