Frequently Asked Questions

Answers to the Most Common Questions about the OnTime® Group Calendar

Do you have any questions about the OnTime® Group Calendar? See if you find the answer below. If you have a hard time finding what you are looking for, please contact us with your questions, we are ready to help.

Did You Not Find What You Were Looking For? 

If you didn't find what you were looking for, you might be able to find the answer in the documentation section. Otherwise, you can submit a question to our support team.


Enabling Digest Password on Tomcat

By default the OnTime for Microsoft bootstrap, administator, password is saved in clear text. If you wish you may enable digest passwords so passwords are not stored in clear text. To enable this feature follow the below steps on your OnTime for Microsoft server:

This requires OnTime for Microsoft version 2.5.0 or newer.

  1. Open a Command Prompt
  2. Navigate to the tomcat binary directory of the OnTime for Microsoft installation
    e.g. "C:\Program Files\IntraVision\OnTimeMS-2.6.0\apache-tomcat-8.5.8-otd\bin"
  3. Set the JRE_HOME variable by running the following commands using the Java Server runtime directory name:
    SET JRE_HOME=C:\Program Files\IntraVision\OnTimeMS-2.6.0\jdk1.8.0_121-otd\jre
  4. Execute the digest.bat file specifying the administrator password of your choosing on the command line like so:
    digest.bat -a sha-256 "" e.g. digest.bat -a sha-256 "MyFunkyPassword"
    The command returns the plaintext password and the digest password separated by a colon as shown below. Note the value returned and copy the returned value after the colon. MyFunkyPassword:0e722296bb198829bbc031abe5e011fd047a1c15200364ef5ea94cfd58b26901
  5. Navigate to the conf-directory
  6. cd ..\conf
  7. Edit the tomcat-users.xml file - notepad tomcat-users.xml
  8. Replace the value of the password attribute for the admin-user with the digest password you copied above. Save and close the file.
  9. Edit the server.xml file - notepad server.xml
  10. Locate the Realm-tag referencing "UserDatabase" and change it
    <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
<Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase">
    <CredentialHandler className="org.apache.catalina.realm.MessageDigestCredentialHandler" algorithm="sha-256"/>
  • Save and close the file.
  • Restart the Apache Tomcat service.

You should now be able to login using the chosen password without the password being stored as plaintext.

Unable to connect to Load Balancer/Exchange Server using self-signed certificate


Stacktrace in ontigms.0.0.log containing something like "PKIX path building failed: unable to find valid certification path to requested target"


Import Root and intermediate certificates into the Java keystore used for on OnTime for Microsoft solution. The below example is based on OnTime for Microsoft v. but the solution is the same for other releases although the paths below will have to be modified slightly depending on the version deployed.

  1. Backup C:\Program Files\IntraVision\OnTimeMS-\otd-jdk1.8.0_25\jre\lib\security\cacerts
  2. Export the root and any intermediate certificates by using copy to file for each using PEM/CER (Base64 encoded) format. This may be done using a web browser. Here we are using *.cer.
  3. Copy the *.cer files to C:\Program Files\IntraVision\OnTimeMS-\otd-jdk1.8.0_25\jre\lib\security\
  4. Using password "changeit" (unless manually changed) install the root certificate
    ..\..\..\bin\keytool -import -trustcacerts -alias root -file root.cer -keystore cacerts
    Using password "changeit" (unless manually changed) install the intermediate certificates
    ..\..\..\bin\keytool -import -trustcacerts -alias intermediateXX -file intermediateXX.cer -keystore cacerts

Restart OnTime for Microsoft.

Domain (SSO) login fails with 400 Bad Request RequestUri/Field To Long


When accessing OnTime for Microsoft with domain(SSO) login enabled the server reports "HttpStatus Code 400 Bad Request – RequestUrl/Field to Long" during the domain logon redirect on the OnTime Server the C:\Windows\System32\LogFiles\HTTPERR\httperr1.log shows
2015-12-10 12:51:43 62489 80 HTTP/1.1 GET /ontime/auth.html?redirect=http://ch-s-0008355:8080/ontimegcms/ 400 - RequestLength -


  1. Using regedit add the following values HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters Key,
    DWORD(Decimal value)
    MaxFieldLength 65534
    MaxRequestBytes 65534
    MaxTokenSize 65535

  2. Stop the OnTimeMSAuth NT Service
  3. Restart the HTTP service From an elevated command prompt
    >net stop http
    >net start http
  4. Start the OnTimeMSAuth NT Service.
How to determine the USERDOMAIN for a license key

The license for OnTime requires the USERDOMAIN name of the Windows server on which the OnTime server runs. This is true for both trial and production environments.

You can find the USERDOMAIN by executing a 'Set' command from a Command prompt. The machine you run the set command on, must be part of the same domain as your future OnTime server. Please make sure that you do not select the USERDNSDOMAIN)".

Please see the example below.

user domain

Outlook Add-In

How to install the OnTime - Outlook Add-in

For information on how to install the OnTime Outlook add-in, please refer to the OnTime Installation & Configuration manual available for download here

Mobile Interface

How can I make an OnTime Web App?

Central roll-out:

Usually OnTime® Mobile is delivered to the whole organisation from a central place, this would usually be through Mobile Device Management Solutions, and therefore it shouldn’t be up to the user to do this manually. 

Manual Instalation:

In order to make an OnTime Mobile Web App in iOS, you have to open your mobile client in safari, using the link you would usually use to open the Desktop Client online, but replacing the word desktop with mobile. You can then click on the square icon with an arrow pointing upwards in the middle of the bottom panel. In the lower part of the box that opens, you can then choose “Add to Home Screen”. You can name the Web App e.g. OnTime Mobile, and click add. You will now have easy access to your OnTime Mobile Client from you home screen.

Microsoft Teams UI's

Why wont OnTime load in the MS Teams desktop application, but loads on MS Teams web?
The web application requires a HTTPS authorization. Check if you are using the correct authorization setup in the Admin Client.


Enabling TLS/SSL on Tomcat

By default the Apache Tomcat application server supplied with OnTime Group Calendar for Microsoft is delivered without TLS/SSL configured and/or enabled. Enabling it is however very easy but requires that you have a valid, signed, certificate and the corresponding private key. Describing how to obtain a private key and a valid, signed, certificate is outside the scope of this FAQ and there are lots of resources available on the web describing the process. Please note that you need both the private key and the certificate in PEM-format (

To get the best performance the Apache Tomcat application delivered with OnTime Group Calendar uses the Apache Portable Runtime (APR). This is important as the process to securing a Tomcat server using APR is slightly different from a Tomcat server not using APR.

For the following we assume that the Apache Tomcat server is installed in C:\Program Files\IntraVision\OnTimeMS-\otd-apache-8.0.14. Following this we'll refer to this location as "".

To configure your Apache Tomcat server for TLS/SSL do the following:

  1. Copy the private key in PEM-format to \conf
  2. Copy the signed certificate in PEM-format to \conf
  3. Edit the server.xml from \conf and scroll down to about line 70. Here you'll see a -tag describing the HTTP transport for the server. Beneath this -tag paste the below snippet:
    <Connector protocol="org.apache.coyote.http11.Http11AprProtocol" port="8443"
    SSLCertificateFile="<path to certificate>"
    SSLCertificateKeyFile="<path to private key>"
    SSLProtocol="TLSv1+TLSv1.1+TLSv1.2" />

    Replace with the actual path to your certificate in PEM-format. If the file is called server.crt that path would be "C:\Program Files\IntraVision\OnTimeMS-\otd-apache-8.0.14\conf\server.crt"

    Replace with the actual path to your private key in PEM format. If the file is called server.key that path would be "C:\Program Files\IntraVision\OnTimeMS-\otd-apache-8.0.14\server.key".
  4. Save and close the file.

Restart the Apache Tomcat server. Now you should be able to access OnTime Group Calendar for Microsoft using TLS/SSL on port 8443.

More information about the -tag may be found at the Apache Tomcat website at

More Help

User Tutorials

Learn about the interfaces and functionalities in our tutorials.

Administration Manuals

Learn about the installation and configuration in our manuals.

Get Support

Did not find what you were looking for.
Ask our experts.

Copyright © 2019 OnTime.
All rights reserved.


Contact Us