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Home > Success Center > Network Performance Monitor (NPM) > System.FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character

System.FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character

Overview

Orion NPM is not processing syslog data and shows the following error in the logs:

 

System.FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters

Environment

All NPM versions

Resolution

Warning:

  • Consult your System Administrator before performing the following procedure.
  • SolarWinds strongly recommends that you only edit the SyslogService.exe.config file as instructed. Any additional modifications may result in system performance issues or may create an error state.
  • Save a copy of the original SyslogService.exe.config file to your local drive as a backup file, in case you need to roll back later

 

  1. Go to C:\Program Files (x86)\SolarWinds\Orion on the NPM server.
  2. Open the SyslogService.exe.config file in a text editor.
  3. In the string  <add key="EnableRfcRelay" value="false"/>, change from false to true.
  4. Save the changes
  5. Restart the Orion Services using the Orion Service Manager.
Last modified
23:42, 22 Jun 2016

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