Recent Updates to Sentry-go Software
At 3Ds, we are constantly adding to our product range, enhancing existing
solutions and, if required, correcting issues that have arisen. The table below
shows the most recent versions & updates to the Sentry-go product range.
Thank you to all our customers who have given feedback or requested enhancements
to our software. We greatly appreciate your assistance. If you have any specific
requirements or would like to see a new
feature added to one of our monitors or tools, please get in touch
Latest Software Versions
|Sentry-go server monitors (Quick
Monitors, Sentry-go Plus! & components)
For details of the most recent changes that affect Sentry-go monitor, please see
below. To download the latest version or for more information on upgrading, please select one
of the following links ...
May '13 (v6.36)
- Fix: File monitoring
In earlier v6.3 versions, selecting an override time (minutes/seconds) could
prevent the associated check from being run as expected, or cause it not to be
run at all. This error has been corrected in this release.
- Fix: E-mail send/receive verification monitoring
In previous versions, performance could be slow if the target mailbox contains
larger numbers of messages. In v6.36, the monitor takes into account the message
size, prior to checking the content.
December '12 (v6.35)
- Fix: Configuring e-mail verification & alerting
Auto-detect option reports inability to access any SMTP server/option even
though "Test" indicates that access is available.
The auto-detect feature failed to pass all values and so some options were
reported as being unavailable, even though access could be achieved from the
monitoring server. This has been corrected in the Configuration Utility &
October '12 (v6.33)
- Fix: Configuring Event Logs & Log Files
When using individual alerts, the configuration window would fail to save
enabled alerts for the above checks. This has been corrected in v6.33. Group-based
alerting is not affected.
September '12 (v6.31 & v6.32)
- Fix: Quick Monitor & individual component licencing
In some cases, a valid licence key was interpreted for the wrong monitoring
component. This has now been corrected.
- Enhancement: File monitoring
File monitoring alerts additionally contain the path of the file (for folders &
sub-directories) that triggered the alert.
June '12 (v6.3)
- New: Sentry-go Runtime Installer
To ensure the runtime files required by Sentry-go are installed, the Setup
Wizard now includes a runtime installer. This is automatically initiated the
first time the Setup Wizard is run. The required Visual C++ Runtime files (VCRT)
are also installed if not found on the target server.
- New: Direct alerting
In previous versions, all alerts were assinged an "alert group" which determined
when they would be triggered. In version 6.3 and above, you can now choose
between group alerts (as used previously) and direct alerts - which allow you to
specify which individual alerts are triggered per check. From v6.3 onwards,
direct alerting is the default method configured by the Setup Wizard.
- Fix: Heartbeat licencing
In some installations, an incorrect configuration key was created causing
heartbeat monitoring to remain disabled, even though licenced & configured.
- Fix: Firewall monitoring
If port monitoring is disabled, firewall monitoring also remains inactive, even
though configured. This has been resolved.
- Fix: Service monitoring
In v6.2, if the server is unable to restart a service, alert notification may
not be sent. This is corrected in v6.3.
- Fix: E-mail send/receive monitoring
When accessing Microsoft Exchange 2010, the e-mail send/receive monitor may
appear to hang. Upon timeout, it triggers an alert indicating e-mails cannot be
received, even though they appear to be working correctly. This was caused by a
formatting issue in the e-mail message received from Exchange 2010 and has been
corrected in this version.
April '12 (v6.2)
- New: Heartbeat monitoring
In version 6.2 and above, all monitors now come with heartbeat monitoring
built-in, free of charge. Heartbeat monitoring allows monitors to actively
ensure other Sentry-go monitos are (i) running and (ii) responding as expected.
Any failures can be alerted, just like any other monitoring check.
- New: Mobile Web Reports
New "mobile" versions of the "Current Status", "Recent Errors" & "System
Summary" can be accessed using the integrated web server, for improved access
from mobile phones & tablet PCs. You can also toggle these between the full &
mobile versions of the reports.
- Enhancement: Current Status Web Report
It is now possible to re-run monitoring checks directly from the "current
status" web report, in order to see the latest value returned.
- Enhancement: E-mail alerting & e-mail send/receive monitor
In version 6.2 and above, the configuration now contains an "auto-detect"
feature, which enable the monitor to determine which of the SMTP e-mail options
can and should be used.
- Enhancement: Setup Wizard
The Setup Wizard now checks for VC9 runtime libraries (CRT) for both standard
and shareware installations.
- Fix: Alerting
When an e-mail alert is verified from the configuration utility, and the
sender's address references an environment variable, (.g. %COMPUTERNAME%), the
environment setting is now correctly sent & translated.
January '12 (v6.1.3)
- Enhancement: Setup Wizard
New Quick Configuration options are now included within the Setup Wizard. Based
on the options being installed, the wizard now (i) auto-configures standard
settings and (ii) prompts for other Quick Config. options. This allows you to
quickly configure standard settings in order to get up and monitoring
immediately following installation.
- Fix: Monitoring Service
Continual access to the recent errors web report, including the publishing of
the report to an external web server caused the monitoring service to use
additional memory. Over time, excessive memory load could be observed. This
issue has been corrected in v6.1.3, which is available free to all v5.x & v6.x
December '11 (v6.1.1 & 6.1.2)
- Enhancement: Monitoring service
The monitor now verifies access to key directories at startup, reporting any
errors in the log and shutting down automatically.
- Fix: Enterprise Option
In cases where logged errors are larger than normal (e.g. long file monitoring
lists), the monitor could fail to log enterprise information. This issue has
been corrected in v6.1.1.
- Enhancement: Client Console
When synchronizing settings across servers, the Console
now allows any configuration values to be copied. Previously, only those
available to all selected monitors could be copied.
November '11 (v6.1)
- Enhancement: File Monitor
The file monitor has been enhanced to provide the otpion of triggering alerts
when the monitor is first started. The default behaviour is to only trigger
alerts at the shceduled monitoring time or interval.
- Enhancement: Alert Correction Monitor
Version 6.1 introduces a new Alert Correction Mechanism (ACM). With it you can
configure a check so that if it should fail, only a single alert will be
triggered. From then on, the check continues to run but the monitor waits until
it is resolved before re-enabling the alert. With the ACM, the monitor can also
notify the alert group when the problem is fixed.
- New: Remote Update Wizard
A new Update Wizard is now available which allows Sentry-go monitors to be
remotely updated across the network. Simply upgrade a single copy locally and
let the Wizard use this installation to remotely update others monitors
- Fix: Client Tools
Under some conditions, particularly when the local PC uses proxy settings,
Sentry-go client tools may fail to connect to the internet (e.g. for when
accessing Sentry-goSolutions & 'ShowMe' help). The client reports no connection
is available even though a browser can connect. This issue has been corrected.
- Enhancement: Configuration Client Tools
Configured lists are now displayed sorted, in ascending sequence for ease of
October '11 (v6.0)
- Fix: Disk Monitor
In version 5.x, larger disk space as incorrectly shown in alerts & web reports.
This has now been corrected.
- Enhancement: Server Configuration
It is now possible to configured whether scheduled checks are run/not run at
startup when the specified time has already past.
- Enhancement: E-mail Alerts & Send/Receive Monitor
You can now include environment variables within the sending e-mail address m-
e.g. to sepcify the machine name automatically.
- Fix: WMI memory leak
In version 5.x, poorly performing WMI providers could cause an error within WMI
itself, leading to a failure of the Sentry-go monitoring service. In version
6.x, this issue has been corrected in two ways. Components (such as Shadow
Events) detect WMI errors and re-request information automatically if issues are
detected. For installations with numerous WMI errors, you can now enable/disable
the use of WMI information from within Sentry-go.
- Enhancement: goNetMail.exe
By default, the utility now continues, even if SSL/TLS connections fail due to a
certificate error. This behaviour is now the default when sending
autrhentication/secure e-mails using .NET from within Sentry-go.
New command line parameters SSL-CERT & TLS-CERT operate in addition to the
previous SSL & TLS. These new parameters re-enable certificate checking and
cause the utility to fail with an error if the SSL certificate is found to be in
error or expired.
- Enhancement: TCP/IP Port Monitor
The port monitor has been enhanced to become the Windows Firewall & TCP/IP
Port monitor. With it you can additionally monitor the status of the
Windows firewall, allowing users to autoamtically re-enable the firewall if
found to be disabled. Exisitng v5.x users of this component can upgrade for
- Fix: All Monitors
When a specific user is configured to run a monitoring check or send an alert
etc., the user's Windows profile is now correctly loaded. Previously this could
fail, or fail to load a roaming profile if available.
- Fix: File Monitor
If a remote resource was access but a connection could not be established (e.g.
incorrect user information), the monitor could fail & restart. This issue has
now been resolved.
- Fix: Process Monitor
If Shadow Events are being used and the monitor is reconfigured, shadow events
are disabled, with an error indicating an initialization failure. This issue has
been corrected in this release.
- Fix: Script Monitor
If multiple script-based checks were run in quick succession, the 2nd could fail
to run with a "could not execute" error. When manually verifying the check,
however, it would work successfully. This issue has now been resolved in v6.0.
- Enhancement: Client Console
This issue has now been resolved in v6.0.ity & web connection verification when launching web reports &
accessing web resources.
- Fix: Performance Optimiser
The Performance Optimiser now correctly records information to the log file
during each cycle. Previously information was intermittently not logged.
- Fix: Web Publishing
When the Sentry-go Summary report is published, the report is now correctly
- Fix: Client Console
The Script Monitor configuration page now correctly assigns & saves the "Current
Directory" when specified. In addition, result strings with multiple lines are
now correctly saved & displayed.
- New: Sentry-go Easy Access Utility
This new client tool works alongside the existing Client Console and provides a
quick & easy way of accessing a monitor directly from your desktop. From the
Easy Access utility, you can view the monitor's current status, access web
reports, configure & export/import settings.
- New: Sentry-go Enterprise Option
The new Enterprise Option is an optional, self-contained system which uses a
central SQL Server database to collect & collate monitored information from
around the Sentry-go environment. It can be used in conjunction with & alongside
the Sentry-go Monitoring System v5.6 and above and requires no additional
hardware or software above the database itself.
With it, each Sentry-go Server subscribes to the Enterprise Option by way of a
licence key. Once activated, the monitor feeds information to the system in
order to indicate the current status of each monitor, indicate when alerts have
been triggered and indicate the current value of all monitored checks.
Monitors continue to work as before and can be accessed in the normal way.
However, with the Sentry-go Enterprise Option, monitoring information can
additionally be accessed in a more global or "enterprise" way.
February '11 (v5.5)
- Enhancement: Client Console, Setup Wizard & Web Site
"Show Me" links are now available from within the above client tools, giving users direct
access to on-line
demonstrations & videos via Sentry-go.com. These in turn show how a particular aspect of the
Client Console, Setup Wizard & Sentry-go concepts work.
- Enhancement: Client Console & Alert Engine
Alert Engine scripts can now be compiled directly from within the Client
Console so you can see how place-markers will be expanded at runtime.
- Enhancement: Client Console
- Alert Groups can now be named & customised - e.g. Critical Errors, SQL Errors
- Alert contacts (e-mail, network message, scripts) can now be named instead of
simply showing the filename or e-mail address etc.
- When configuring custom services, the service list is now presented in
for easier navigation.
- When saving, the Console now sorts the list of servers alphabetically.
- Enhancement: Sentry-go Service & Process Monitoring Components
When shown in their respective web report, the service & process list is now
shown in alphabetical order for better navigation.
- Enhancement: Alert & Auto-Response Engines
In this release, the monitor has been enhanced to give additional diagnostic
information when verifying alert e-mails, network messages, scripts and response
- Fix: Sentry-go Alert Engine
- Fix: Sentry-go goNetMail Utility (v1.7)
If the utility cannot connect to the SMTP server
or the mail cannot be sent, the error message now includes additional
diagnostics to indicate the nature of the fault.
January '11 (v5.4.6)
- New: Sentry-go Monitor
By default, when an automatic response is initiated, it is monitored and timed
out if the command, application or script takes longer to complete than the
configured value. In this version, it is now possible to override this, and
ignore the timeout check if required.
- New: Sentry-go Setup Wizard
In previous versions, the application data folder was located in the Windows
defined "ProgramData" directory. From this release, you can now override both
the program files & data location.
- New: Client Console
In this release, you can now access & control the running status of the
Sentry-go monitoring service from within the Console, either locally or
remotely. The monitor's diagnostic log file can also be accesed directly,
lcoally or remotely from within the Console.
You can now verify command & script-based responses direct from within the
- Fix: Sentry-go Available Disk Space Monitor
Support is now provided for larger disk sizes.
- Fix: Sentry-go Process Monitor
In previous versions, if a response was specified, it was always actioned as a
direct command, despite other options being selected (e.g. Run as VBScript) in
the configuration settings. This has been resolved in this version.
- Fix: Sentry-go Monitor
If the PDH.DLL and/or PSAPI.DLL (depending on Windows version) cannot be
loaded during the startup sequence, the monitor could stop. Although this
indicates a configuration error within Windows, in many cases the information is
From v5.4.6, if these DLLs cannot be accessed a warning is logged, but the
monitor will continue its start-up sequence.
- Fix: Sentry-go Setup Wizard
When primary Performance Counters are verified, the Setup Wizard now checks both
direct & Virtual Machine (VM) based counters. When requried, the VM-equivalent
counter is automatically used instead of the default.
The Setup Wizard also now verifies that directories can be written to after
creation and warns if permissions do not allow this.