Failed to open the file stream <file name> due to the following error <error text>.
The Log Manager was unable to open the log event file for reading or writing. This error can occur when the permissions for a log event file or the log event directory are modified after the Log Manager begins reading or writing or because the file was removed.
Correct the error indicated in the message and make sure the user account that runs Informatica Services has read and write permission on the file.