This usually means you are on Teramind Starter or Teramind UAM and do not have the feature under the tier. For example, only certain monitoring reports/BI reports are available on Teramind Starter. If you try to access such a report, you will get the "Access denied" error message:
To access the feature, please upgrade to an upper tier, i.e., Teramind UAM or Teramind DLP.
You can also get this message if you are a regular employee and do not have the access permission to view the feature. Your administrator can configure what features you can access from the Configure > Access Control panel.