This document is a guide to installing this package of
Firebird 2.5 on the Windows platform. These notes refer
to the installation package itself, rather than
Firebird 2.5 in general. In addition, these notes are
primarily aimed at users of the binary installer.
It is assumed that readers of this document are already
familiar with Firebird 2.1. If you are evaluating
Firebird 2.5 as part of a migration from Fb 2.1 you are
advised to review the Fb 2.5 documentation to
understand the changes made between 2.1 and 2.5.
o Before installation
o Problems with installation of MS VC runtime libraries
o Known installation problems
o Other Notes
o Installation from a batch file
It is recommended that you UNINSTALL all previous
versions of Firebird or InterBase before installing
this package. It is especially important to verify that
fbclient.dll and gds32.dll are removed from .
Problems with installation of MS VC runtime libraries
Much work has been done to ensure that the MS Visual
C runtime libraries are correctly installed by the
binary installer. Since v2.1.2 Firebird will work with
locally deployed instances of the runtime libraries.
This especially simplifies deployment of the Firebird
client or embedded dll with your own application.
However, in case of problems it may be necessary to
deploy the official vcredist.exe. The correct versions
for this build of Firebird can be found here:
and x64 here:
Other Known installation problems
o It is only possible to use the binary installer
to install the default instance of Firebird 2.5. If
you wish to install additional, named instances you
should manually install them with the zipped install
o Unfortunately, the installer cannot reliably detect
if a previous version of Firebird Classic server
o There are known areas of overlap between the
32-bit and 64-bit installs:
– The service installer (instsvc) uses the same
default instance name for 32-bit and 64-bit
installations. This is by design. Services exist
in a single name space.
– If the 32-bit and 64-bit control panel applets are
installed they will both point to the same default
o When installing under Vista be sure to install as an
administrator. ie, if using the binary installer
right click and choose ‘Run as administrator’.
Otherwise the installer will be unable to start the
Firebird service at the end of installation.
o Libraries deployed by instclient will fail to load if
the MS runtime libraries have not been installed
correctly. In case of problems users should install
the appropriate version of vcredist.exe mentioned
o It is preferred that this package be uninstalled
correctly using the uninstallation application
supplied. This can be called from the Control Panel.
Alternatively it can be uninstalled by running
unins000.exe directly from the installation
o If Firebird is running as an application (instead of
as a service) it is recommended that you manually
stop the server before running the uninstaller. This
is because the uninstaller cannot stop a running
application. If a server is running during the
uninstall the uninstall will complete with errors.
You will have to delete the remnants by hand.
o Uninstallation leaves five files in the install
This is intentional. These files are all
potentially modifiable by users and may be required
if Firebird is re-installed in the future. They can
be deleted if no longer required.
o A new feature of the uninstaller is an option to
run it with the /CLEAN parameter. This will check
the shared file count of each of the above files. If
possible it will delete them.
o Uninstallation will not remove the MS VC runtime
libraries from the system directory. These can be
removed manually via the control panel, but this
should not be required under normal circumstances.
Firebird requires WinSock2. All Win32 platforms
should have this, except for Win95. A test for the
Winsock2 library is made during install. If it is
not found the install will fail. You can visit
to find out how to go about upgrading.
Installation from a batch file
The setup program can be run from a batch file.
Please see this document:
for full details.