Remove DISABLED value from 'zowe.verifyCertificates' property (v2.x)

[nxhafa]

Please check if your PR fulfills the following requirements. This is simply a reminder of what we are going to look for before merging your PR. If you don't know all of this information when you create this PR, don't worry. You can edit this template as you're working on it.

• Tests for the changes have been added (for bug fixes / features)
• Necessary documentation (if appropriate) have been added / updated
• DCO signoffs have been added to all commits, including this PR

PR type

What type of changes does your PR introduce to Zowe? Put an x in the box that applies to this PR. If you're unsure about any of them, don't hesitate to ask.

• Bugfix
• Feature
• Other... Please describe: Breaking change. Removing DISABLED option from zowe.verifyCertificates property in zowe.yaml. If DISABLED is provided, an error will be logged and zowe will not start.

Relevant issues

Fixes

Changes proposed in this PR

• Removing the option to disable certificate verification. Valid options for zowe.verifyCertificates are now only STRICT and NONSTRICT

Does this PR introduce a breaking change?

• Yes
• No

Does this PR add or change a YAML parameter?

• Yes
• No

Does this PR do something the person installing Zowe should know about?

---

• Affected function: SSL certificate verification

---

• Description: Remove DISABLED option from zowe.verifyCertificates property

---

• Part: zowe.yaml

---

multi-line description

Is there a related doc issue or Pull Request?

Doc issue/PR number: zowe/docs-site #5051

Other information

zowe/api-layer PR number: #4683

[github-actions]

build 10462 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27016700031

[github-actions]

Test workflow 8702 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.18.5-PR-4802/zowe-2.18.5-pr-4802-10462-20260605131515.pax
Running on machine: zzow10
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27017068389

[github-actions]

build 10490 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27151859209

[github-actions]

Test workflow 8715 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.18.5-PR-4802/zowe-2.18.5-pr-4802-10490-20260608163300.pax
Running on machine: zzow09
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27152175254

[1000TurquoisePogs]

You cannot do a breaking change without a major version bump, so it is not possible to do within v2.

[github-actions]

build 10500 SUCCEEDED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27211907192

[github-actions]

Test workflow 8718 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.18.5-PR-4802/zowe-2.18.5-pr-4802-10500-20260609141204.pax
Running on machine: zzow11
Result: FAILURE
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27212249828

[balhar-jakub]

@1000TurquoisePogs This is the removal of HTTP that we discussed and agreed on on the TSC, I will bring it up again this Thursday as it seems that there were some misunderstandings.

[1000TurquoisePogs]

Removal of HTTP and removal of verifyCertificates=DISABLED are two different things.
We never supported HTTP so there's nothing to break, removing it from the codebase isn't a breaking change.
DISABLED currently works today so if we remove it then that is a breaking change.

[github-actions]

Test workflow 8718 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.18.5-PR-4802/zowe-2.18.5-pr-4802-10500-20260609141204.pax
Running on machine: zzow11
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27212249828

[github-actions]

Test workflow 8719 is started.
Running install test: Convenience Pax
The zowe artifact being used by this test workflow: libs-snapshot-local/org/zowe/2.18.5-PR-4802/zowe-2.18.5-pr-4802-10500-20260609141204.pax
Running on machine: zzow10
Result: SUCCESS
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27218648983

[github-actions]

build 10528 FAILED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27422321984

[github-actions]

build 10528 FAILED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27422321984

[github-actions]

build 10528 FAILED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27422321984

[github-actions]

build 10578 FAILED.
Link to workflow run: https://github.com/zowe/zowe-install-packaging/actions/runs/27769116125