A problem investigation had been previously closed, because the risk was accepted, in favor of using the workaround, instead of applying the fix. After a couple of weeks, the issue starts to occur more frequently, so management wants to re-visit the root cause analysis.What would be the next step for this problem?
You can reanalyze the problem even after it is closed by clicking Re-analyze. The state of the problem changes from Closed to Root Cause Analysis.
https://www.servicenow.com/docs/bundle/yokohama-it-service-management/page/product/problem-management/task/resolve-and-complete-problem.html