e0008130-The tape drive is unable to decrypt the data on the tape
I have a client running Backup Exec 12.0 fully updated and it seems that since Symantec Endpoint Protection 12.1.2 was installed on some existing Ultrium 4 media sets all the tapes are suddenly becoming unusable with e0008130 errors as listed in the title of this dicussion. The media group tape members were brought in to service at different times with assorted ages--none older than a year. The client has two sets of five running every week night. Therefore the media has only been used every other week for less than a year. This all seemed to start happening after installing the Endpoint Protection (not positive this is causing the issue--just wanted to make mention) and also right after this years Daylight Savings Time change on March 10, 2013. The tape drive and software were in service for over a year with no issues. Previous version of virus protectioin was Symantec Client Security. The issue is first discovered in the morning when during the evening at the beginning of a scheduled backup the tape will eject wih a zero byte count status. I will try to reinitialize the tape with either a quick or long erase and will then receive the e0008130 error. The tape is totally unusable at that point. We can replace the tapes and continue to get clean backups but this is becoming very expensive and a regular occurance. Please help.