Maven plugins can not be found in IntelliJ

For newer versions of IntelliJ, enable the use plugin registry option within the Maven settings as follows:

Click File 🡒 Settings. Expand Build, Execution, Deployment 🡒 Build Tools 🡒 Maven. Check Use plugin registry. Click OK or Apply.

For IntelliJ 14.0.1, open the preferences---not settings---to find the plugin registry option:

Click File 🡒 Preferences.

Regardless of version, also invalidate the caches:

Click File 🡒 Invalidate Caches / Restart. Click Invalidate and Restart.

When IntelliJ starts again the problem should be vanquished.

Run a Force re-import from the maven tool window. If that does not work, Invalidate your caches (File > Invalidate caches) and restart. Wait for IDEA to re-index the project.

I had this problem for years with the maven-deploy plugin, and the error showed up even though I was not directly including the plugin in my POM. As a work-around I had to force include the plugin with a version into my POMs plugin section just to remove the red-squiggly.

After trying every solution on Stack Overflow, I found the problem: Looking into my .m2/repository/org/apache/maven/plugins/maven-deploy-plugin directory there was a version 'X.Y' along with '2.8.2' et al. So I deleted the entire maven-deploy-plugin directory, and then re-imported my Maven project.

So it seems the issue is an IntelliJ bug in parsing the repository. I would not not remove the entire repository though, just the plugins that report an error.

None of the other answers worked for me. The solution that worked for me was to download the missing artifact manually via cmd:

mvn dependency:get -DrepoUrl=http://repo.maven.apache.org/maven2/ -Dartifact=ro.isdc.wro4j:wro4j-maven-plugin:1.8.0

After this change need to let know the Idea about new available artifacts. This can be done in "Settings > Maven > Repositories", select there your "Local" and simply click "Update".

Edit: the -DrepoUrl seems to be deprecated. -DremoteRepositories should be used instead. Source: Apache Maven Dependency Plugin – dependency:get.

The red with warnings maven-site-plugin resolved after the build site Lifecycle:

https://i.stack.imgur.com/HEk9s.png

My IntelliJ version is Community 2017.2.4

SOLVED !!!

This is how I fixed the issue...

Tried one of the answers which include 'could solve it by enabling "use plugin registry" '. Did enable that but no luck. Tried again one of the answers in the thread which says 'If that does not work, Invalidate your caches (File > Invalidate caches) and restart.' Did that but again no luck. Tried These options .. Go to Settings --> Maven --> Importing and made sure the following was selected Import Maven projects automatically Create IDEA modules for aggregator projects Keep source... Exclude build dir... Use Maven output... Generated souces folders: "detect automatically" Phase to be...: "process-resources" Automatically download: "sources" & "documentation" Use Maven3 to import project VM options for importer: -Xmx512m But again no success. Now lets say I had 10 such plugins which didn't get resolve and among them the first was 'org.apache.maven.plugins:maven-site-plugin' I went to '.m2/repository/org/apache/maven/plugins/' and deleted the directory 'maven-site-plugin' and did a maven reimport again. Guess what, particular missing plugin got dowloaded. And I just followed similar steps for other missing plugins and all got resolved.

I had the same issue. I added the plugins into my pom.xml dependencies and it works for me.

    <dependency>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-site-plugin</artifactId>
        <version>3.3</version>
        <type>maven-plugin</type>
    </dependency>

    <dependency>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-install-plugin</artifactId>
        <version>2.4</version>
        <type>maven-plugin</type>
    </dependency>

    <dependency>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-deploy-plugin</artifactId>
        <version>2.7</version>
        <type>maven-plugin</type>
    </dependency>

I tried the other answers, but none of them solved this problem for me.

The problem disappeared when I explicitly added the groupId like this:

<plugins>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-clean-plugin</artifactId>
        <version>3.1.0</version>
    </plugin>
</plugins>

Once the color of the version number changed from red to black and the problem disappeared from the Problems tab the groupId can be removed again from the problematic plugin, the error does not show up again and the version number even shows up as suggestion for version.

I had the same error and was able to get rid of it by deleting my old Maven settings file. Then I updated the Maven plugins manually using the mvn command:

mv ~/.m2/settings.xml ~/.m2/settings.xml.old
mvn -up

Finally I ran the "Reimport All Maven Projects" button in the Maven Project tab in IntelliJ. The errors vanished in my case.

I am using IntelliJ Ultimate 2018.2.6 and found out, that the feature Reimport All Maven Project does not use the JDK, which is set in the Settings: Build, Execution, Deployment | Build Tools | Maven | Runner. Instead it uses it's own JRE in IntelliJ_HOME/jre64/ by default. You can configure the JDK for the Importer in Build, Execution, Deployment | Build Tools | Maven | Importing.

In my specific problem, an SSL certificate was missing in the JREs keystore. Unfortunately IDEA only logs this issue in it's own logfile. A little red box to inform about the RuntimeException had been really nice...

This did the trick for me...delete all folders and files under 'C:\Users[Windows User Account].m2\repository'.

Finally ran 'Reimport All Maven Projects' in the Maven Project tab in IntelliJ.

Remove your local Maven unknown plugin and reimport all maven projects. This will fix this issue.

You can find it under View > Tool Windows > Maven :

https://i.stack.imgur.com/CXTCx.jpg

For me it was as simple as giving the plugin a version:

<version>3.3.0</version>

The full plugin code sample is given below:

<build>
<plugins>
  <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-assembly-plugin</artifactId>
    <version>3.3.0</version>
    <executions>
      <execution>
        <phase>package</phase>
        <goals>
          <goal>single</goal>
        </goals>
        <configuration>
          <archive>
            <manifest>
              <mainClass>Main</mainClass>
            </manifest>
          </archive>
          <descriptorRefs>
            <descriptorRef>jar-with-dependencies</descriptorRef>
          </descriptorRefs>
        </configuration>
      </execution>
    </executions>
  </plugin>

I was recently faced with the same issue. None of the other solutions resolved the red error lines.

What I did was run the actual targets in question (deploy, site). I could see those dependencies then being fetched.

After that, a reimport did the trick.

None of the other solutions worked for me.

My solution:

Maven Settings -> Repositories -> select Local Repository in the list, Update

Worked like a charm!

I could solve this problem by changing "Maven home directory" from "Bundled (Maven 3) to "/usr/local/Cellar/maven/3.2.5/libexec" in the maven settings of IntelliJ (14.1.2).

Uncheck the "Work offline" checkbox in Maven settings.

Here is what I tried to fix the issue and it worked:

Manually deleted the existing plugin from the .m2 repo Enabled "use plugin registry" in IntelliJ Invalidated the cache and restarted IntelliJ Reimported the maven project in IntelliJ

After following above steps, the issue was fixed. Hopefully this helps you as well.

For me which worked is putting the repository which contained the plugin under pluginRepository tags. Example,

<pluginRepositories>
    <pluginRepository>
        <id>pcentral</id>
        <name>pcentral</name>
        <url>https://repo1.maven.org/maven2</url>
    </pluginRepository>
</pluginRepositories>

Enabling "use plugin registry" and Restart project after invalidate cash solved my problem

to Enabling "use plugin registry" >>> (intelij) File > Setting > Maven > enable the option from the option list of maven

To invalidate cash >>> file > invalidate cash

That's it...

This worked for me

Go to Settings --> Maven --> Importing --> JDK for importer --> use "Use Project JDK" option instead of a custom JDK set previously. Re-build/re-import all the dependencies.

If an artefact is not resolvable. Go in the directory of your .m2/repository and check that you DON'T have that kind of file :

build-helper-maven-plugin-1.10.pom.lastUpdated

If you don't have any artefact in the folder, just delete it, and try again to re-import in IntelliJ.

the content of those files is like :

#NOTE: This is an Another internal implementation file, its format can be changed without prior notice.
#Fri Mar 10 10:36:12 CET 2017
@default-central-https\://repo.maven.apache.org/maven2/.lastUpdated=1489138572430
https\://repo.maven.apache.org/maven2/.error=Could not transfer artifact org.codehaus.mojo\:build-helper-maven-plugin\:pom\:1.10 from/to central (https\://repo.maven.apache.org/maven2)\: connect timed out

Without the *.lastUpdated file, IntelliJ (or Eclipse by the way) is enabled to reload what is missing.

This worked for me:

Close IDEA

Delete "*.iml" and ".idea" -directories(present in the root folder of project)

Run "mvn clean install" from the command-line

Re-import your project into IDEA

After re-importing the entire project, installation of dependencies will start which will take some minutes to complete depending upon your internet connection.

My case:

maven-javadoc-plugin with version 3.2.0 is displayed red in IntelliJ.

Plugin is present in my local maven repo.

Re-imported maven million times.

Ran mvn clean install from the command line N times.

All my maven settings in IntelliJ are correct.

Tried to switch between Bundled and non-bundled Maven.

Tried do delete the whole maven repo and to delete only the plugin from it.

Nothing of the above worked.

The only thing that almost always helps with modern IntelliJ IDEA versions is "Invalidate caches / Restart". It helped this time as well. maven-javadoc-plugin is not red anymore, and I can click on it and to to the source pom file of the plugin.

Recently I faced the same issue. All tips doesn't work in my cause.

But I fix it.

Go to Intellij idea setting, find Maven, and in it you need to open Repository tab and update maven and local repos. That's all.

If you have red squiggles underneath the project in the Maven plugin, try clicking the "Reimport All Maven Projects" button (looks like a refresh symbol).

https://i.stack.imgur.com/mIp0h.png

I use the community edition packaged as snap on Ubuntu 18.04.

I experience that issue each time there a IntelliJ release.

In that scenario, my working solution is to invoke the invalidate cache and restart from the file menù flagging the indexes removal too.

June/2021:

No Delete, No Reimport.

What I did is, I was going to :

C:\Users\dell\.m2\repository\org\apache\maven\plugins

Then double Click on every Plugin Folders, And see what version it is downloaded.

Then I came back to pom file, and according to downloaded version, I carefully changes those versions in <version>....</version> Tags. Then refresh.

And That way, All red marks are gone, Even gone those Yellow Marks.

All Clean. Alhamdulillah.

Here is my full pom file for further notice. The Project is JavaFx+Maven with Shade :

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>main.java.sample</groupId>
    <artifactId>ThreeColumnTable</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>15.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>15.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-install-plugin</artifactId>
            <version>2.4</version>
            <type>maven-plugin</type>
        </dependency>

        <dependency>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-deploy-plugin</artifactId>
            <version>2.7</version>
            <type>maven-plugin</type>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <source>11</source>
                    <target>11</target>
                    <release>11</release>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <phase>test</phase>
                        <goals>
                            <goal>resources</goal>
                            <goal>testResources</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-project-info-reports-plugin</artifactId>
                <version>3.1.2</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-clean-plugin</artifactId>
                <version>3.1.0</version>
                <configuration>
                    <filesets>
                        <fileset>
                            <directory>src/main/generated-groovy-stubs</directory>
                        </fileset>
                    </filesets>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>org.example.App</mainClass>
                            <manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.openjfx</groupId>
                <artifactId>javafx-maven-plugin</artifactId>
                <version>0.0.1</version>
                <configuration>
                    <mainClass>org.example.App</mainClass>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.2.4</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <shadedArtifactAttached>true</shadedArtifactAttached>
                            <shadedClassifierName>project-classifier</shadedClassifierName>
                            <transformers>
                                <transformer implementation=
                                                     "org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>org.example.Main</mainClass>
                                </transformer>
                            </transformers>

                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

Goto IntelliJ -> Preferences -> Plugin

Search for maven, you will see 1. Maven Integration 2. Maven Integration Extension.

Select the Maven Integration option and restart your Intellij

You can add them as dependencies:

<dependencies>
    <dependency>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-clean-plugin</artifactId>
        <version>2.4.1</version>
    </dependency>
</dependencies>

Intellij will resolve them. After successfull import dependencies, you can clean them.