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:…
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…
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…
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…
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…
Free Windows Virtual Machines for all major Internet Explorer versions by Microsoft
Microsoft published free Windows virtual machines for every major Internet Explorer version for multiple virtualization platforms. https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/windows/
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…
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…
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…
HTML 5 Compatible Web Browsers
The following links display comprehensive comparisons of web browsers on the support of the HTML 5 features. http://en.wikipedia.org/wiki/Comparison_of_layout_engines_%28HTML_5%29 http://fmbip.com/litmus http://caniuse.com/