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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11In software quality assurance, retesting means rerunning a test that failed because of a reported defect after a fix is available. It checks whether that specific issue is resolved. Regression testing answers a different question: whether the change has unintentionally affected other behavior. Teams may need both; a successful retest does not establish that the rest of the application is working correctly.
What is retesting?
Retesting—also called confirmation testing in some software-testing contexts—is the focused verification of a particular defect fix. Start with the failed scenario in the defect report, apply the relevant build containing the fix, and check whether the observed result now matches the expected result.
The aim is not to repeat every test in the application. It is to confirm the reported behavior under conditions that make the original failure meaningful. If a fix changes a necessary precondition, update the case accordingly while preserving enough of the original scenario to verify the defect.
What is the difference between retesting and regression testing?
| Activity | Question answered | Typical scope |
|---|---|---|
| Retesting (confirmation testing) | Does this previously failing scenario pass after its fix? | The reported defect and its original or appropriately updated reproduction case. |
| Regression testing | Did the change break other behavior that should still work? | Related or selected existing functionality, chosen according to the change and risk. |
These activities are complementary, not interchangeable. Retesting targets the fix; regression testing looks for unintended effects elsewhere. A team might first confirm the defect scenario, then run regression checks around affected components. The appropriate regression scope depends on what changed and the risk of side effects.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesHow to retest a defect
- Review the defect and fix information. Locate the accepted defect report and identify the build or version that contains the fix. Keep the report’s reproduction steps, relevant test data, environment, expected and actual results, and fix reference available.
- Recreate the relevant conditions. Use an environment and preconditions that resemble those of the original failure, unless the report or fix specifies a necessary change. Note any differences that could affect the result.
- Select and check the test case. Begin with the original failed case. Confirm that its expected result remains valid; revise the case only as needed to account for changed preconditions while retaining the defect’s essential scenario.
- Run the case against the fixed build. Follow the steps, use the relevant data, and compare the observed behavior with the expected result. Capture enough evidence—such as the build, environment, steps, and result—to let another tester or developer understand what happened.
- Update the defect record. If the expected behavior is observed, record the confirmation. If the case still fails, document the current result and reproduction details and return the defect for further work.
- Choose related regression checks. Consider the affected components and the risk of unintended changes, then run suitable checks separately from the focused retest.
What should a retest record include?
A useful record lets someone else understand what was tested and why the outcome supports the defect’s status. Preserve:
- Defect identifier and reference to the fix.
- Build or version tested, plus the relevant environment.
- Reproduction steps, preconditions, and test data.
- Expected result and the observed result.
- Pass or fail status and supporting evidence, such as logs or screenshots where appropriate.
- Any differences from the original setup or changes made to the test case.
On failure, include updated steps and evidence rather than only marking the defect as still open. On success, record that the specific behavior was confirmed; do not treat that result as evidence that unrelated behavior passed.
Can retesting be automated?
Sometimes. Automation is neither categorically impossible nor automatically the better choice. Whether to automate a retest depends on how repeatable the scenario is, the setup and maintenance it requires, and whether the expected benefit justifies that effort. A stable, repeatable case may be suitable for an automated check; a case that depends on difficult setup or changing conditions may call for a different approach.
Whichever approach is used, the test still needs to exercise the defect scenario against the build containing the fix and produce a result that can be evaluated. Automation does not remove the need to preserve the defect context or to decide separately which regression checks are warranted.
Keeping defect and test records organized
Teams can use test-management or issue-tracking software to link a defect to its test case and record the build and outcome. Tools such as Jira, TestRail, Bugzilla, and Mantis are mentioned in secondary manual-testing guidance for related tracking tasks; this is not a comparison or assessment of their current features. When evaluating any tool, consider whether it supports defect-to-test traceability, straightforward reruns and result recording, integration with the team’s development workflow, useful reporting, and the team’s size and process.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Retesting outside software QA
The word “retesting” also appears in research methods, including reproduction and replication studies. In that context, it does not necessarily mean checking a software defect fix. The guide here uses the term in its software quality-assurance sense.
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