Secret clearance question

25 years ago I plead guilty to a felony charge and was sentenced to 5 years probation, will this prevent me from getting my secret clearance renewed?

When you say renewed that indicates you had a clearance before or have one now? Time has mitigated the felony offense and as long as you are forthright in disclosing it on the SF-86 and nothing else has happened since then there should be no issue.