Hello @Nandhakumar Srinivasan
If you're unable to fetch access token for Azure devops, then verify if the Service Principal is valid Or expired.
if you are facing this issue , you can go to Azure Devops->ProjectSettings -> PipeLines --> Service Connections ->Manage Service Principal
Check on the expired token, delete the token and create a new certificate.
Alternativly, You can use a personal access token (PAT) as an alternate password to authenticate into Azure DevOps.
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