Spring Tools Suite4

Question

Iam unable to install a software[ Web, XML, Java EE and OSGi Enterprise Development] in Spring Tools Suite4. Any help is appreciated. enter image description here

I clicked on help->Install New Software-> [ Web, XML, Java EE and OSGi Enterprise Development]. But a problem occured. Installing Software has encountered a problem. An error occured while collecting items to be installed.

Answer 1

I double checked the overall ability to install additional plugins from that category into a fresh Spring Tools 4 for Eclipse 4.16.1.RELEASE installation and it installs just fine. So this doesn't seem to be a problem with the newly installed software from that category itself, but something else that interferes in the install process.

It looks like you installed additional plugins or server definitions from some Oracle update site before, which added a specific update site to the preferences that is now causing a problem.

You can go to Preferences -> Install/Update -> Available Update Sites and remove that update site from the list of available update sites. That would help.

Another way to avoid this (probably) is to disable the option to Contact all update sites during the install to find required software in the Install New Software dialog. That should also prevent the install process from contacting that problematic update site.