Installation guide

144 EMC NetWorker Release 8.1 SP1 Installation Guide
Downgrade to a Previous Release
Downgrading a NetWorker server to NetWorker 8.0.x
To revert the NetWorker server to NetWorker 8.0.x, perform these tasks:
◆ “Uninstalling the NetWorker software” on page 144
◆ “For Windows only, remove the librpcomp.dll registry entry” on page 144
◆ “Deleting the NetWorker tmp directory” on page 145
◆ “Installing the NetWorker software” on page 145
Uninstalling the NetWorker software
The following sections describe how to uninstall the NetWorker software:
◆ “Uninstalling the NetWorker and Console server software on AIX” on page 72
◆ “Uninstalling the NetWorker software on HP-UX” on page 79
◆ “Uninstalling NetWorker and Console server software on Linux” on page 91
◆ “Uninstalling the NetWorker and Console server on Solaris” on page 108
◆ “Uninstalling the NetWorker and Console server on Windows” on page 125
For Windows only, remove the librpcomp.dll registry entry
This section only applies to a Windows host where the NetWorker 8.1 DA version is
currently installed, or was installed prior to upgrading to NetWorker 8.1 GA.
For example, the following downgrade scenarios require that you remove the librcomp.dll
registry entry on Windows NetWorker server:
◆ Downgrading an 8.1 (DA version) NetWorker server.
◆ Downgrading an 8.1 (GA version) NetWorker server that was previously running the DA
version of the 8.1 software.
To remove the librcomp.dll registry entry:
1. Start the regedt32.exe program
2. Navigate to the following registry setting:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVe
rsion\SharedDLLs
3. Delete the following key:
C:\Program Files\EMC NetWorker\nsr\bin\librpcomp.dll
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If you do not remove the registry key after you install the previous version of the NetWorker
software, the nsrsnmd process fails to start and the following error message appears in
the daemon.raw file:
Unable to send the version information: Daemon versions for 'nsrsnmd version' and
'nsrmmd version' are not updated in NSRLA.