Before proceeding to the solutions below, make sure the Solaris version is 11.0.

# uname -a
  SunOS unixTestingDSA.dslab.local 5.11 11.0 sun4v sparc sun4v

Uninstall Issue

If the Deep Security Agent was previously upgraded, then uninstallation might fail with the following or related reasons:

# pkg uninstall ds-agent
  Creating Plan \pkg: Unknown publisher 'trendmicro'.

# pkg uninstall ds-agent
  Creating Plan \
  Errors were encountered while attempting to retrieve package or file data for
  the requested operation.
  Details follow:
  
  file protocol error: code: 37
  URL: 'file:///var/opt/ds_agent/ips_repo/publisher/trendmicro/pkg/security%252Fds-agent/12.0.0.280%252C5.11%253A20190426T232240Z'.
(happened four times)

If either of these errors occurs, remove the IPS package manager cache and try to uninstall the agent again.

# rm -rf /var/pkg/cache
  # pkg uninstall ds-agent
  # pkg unset-publisher trendmicro

Upgrade Issue

If the Deep Security Agent upgrade procedure fails, do the following:

1. Remove the IPS package manager cache.

   # rm –rf /var/pkg/cache

2. Upgrade the agent again.