Category Archives: Web

Only persistence units with transaction type JTA can be used as a container managed entity manager

NetBeans can use multiple deployment servers. When your web application uses the Entity Framework and you select the Glassfish server as the deployment server, you can get the error message when you try to run your application in the IDEÉ Severe: Exception while preparing the app : The persistence-context-ref-name […] in module […] resolves to a …

Continue reading “Only persistence units with transaction type JTA can be used as a container managed entity manager”

Tomcat web server installation

Tomcat is one of the most popular free web servers. Tomcat runs on the Linux, Macintosh, and Windows operating systems. To install Tomcat Install the Java Runtime Environment (JRE) Download the Java JRE from http://www.oracle.com/technetwork/java/javase/downloads/index.html Install the Java JRE On Windows Execute the downloaded .exe file Create an environment variable to point to the installed Java If you installed …

Continue reading “Tomcat web server installation”

Cannot restart the Atlassian Confluence service on Windows

When the Atlassian Confluence wiki is installed on a Windows server, it frequently becomes unavailable. Sometimes it is possible to restart the Atlassian Confluence Windows service, but most of the time the Stop phase times out with: Windows could not stop the Atlassian Confluence service on Local Computer. Error 1053: The service did not respond …

Continue reading “Cannot restart the Atlassian Confluence service on Windows”

Mailbox unavailable. The server response was: No such user here

When you send email from an application, most SMTP servers require authentication. Your application needs to supply a valid username and password to be able to connect to the server. This prevents strangers to use your SMTP server and send millions of spam emails. When your application does not supply the correct credentials to connect to …

Continue reading “Mailbox unavailable. The server response was: No such user here”

Unable to read data from the transport connection: net_io_connectionclosed.

When your application tries to send an email using a Gmail account you may get the error message: Unable to read data from the transport connection: net_io_connectionclosed. One of the causes can be, when “Less secure apps” are not allowed to use the Gmail account. To enable “Less secure apps” to use the Gmail account Log …

Continue reading “Unable to read data from the transport connection: net_io_connectionclosed.”

How to get rid of the boring unwanted picture in Skype

Since Microsoft purchased Skype there is an annoying, unwanted advertisement on the main page. If you are tired of seeing the same boring picture every time you turn on Skype In the Tools menu select Change language, At the bottom of the list click Edit Skype Language File, In the Language File Editor click Save as …

Continue reading “How to get rid of the boring unwanted picture in Skype”

DynDns update error

On Windows 8 and Windows Server 2012 the Dyn Updater cannot update the IP address if you set the IPv-4 Configuration to Automatic during installation. The log contains the following error messages: daemon – WARNING – Unable to get IP addresses for …dyndns.org, will retry later. frontend – WARNING – API request failed. Status: 500 …

Continue reading “DynDns update error”

Enable File Level Authentication or set SSL requirements in IIS 7 and 7.5

In Windows Server 2008 and 2008 R2 the Internet Information Services (IIS) Manager looks different from the  IIS 6 version. To set file level attributes, like authentication, SSL requirement, follow the steps below: Start Internet Information Services (IIS) Manager On the left side select the application you want to administer. At the bottom of the …

Continue reading “Enable File Level Authentication or set SSL requirements in IIS 7 and 7.5”