error while creating project in maven

send a screen shot.

attached the issue in text file also:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\chowdhurym>mvn --version
Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T11:41:4
7-05:00)
Maven home: C:\Program Files\apache-maven-3.3.9-bin\apache-maven-3.3.9\bin\..
Java version: 1.8.0_101, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.8.0_101\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "dos"

C:\Users\chowdhurym>cd maven

C:\Users\chowdhurym\maven>mvn archetype:generate
[INFO] Scanning for projects...
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-clean-plugin/2.5/maven-clean-plugin-2.5.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-clean-plugin:2.5: Plugin org.apache.maven.plugins:maven-clean-plugin:2.5 or on
e of its dependencies could not be resolved: Failed to read artifact descriptor
for org.apache.maven.plugins:maven-clean-plugin:jar:2.5
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-install-plugin/2.4/maven-install-plugin-2.4.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-install-plugin:2.4: Plugin org.apache.maven.plugins:maven-install-plugin:2.4 o
r one of its dependencies could not be resolved: Failed to read artifact descrip
tor for org.apache.maven.plugins:maven-install-plugin:jar:2.4
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-deploy-plugin/2.7/maven-deploy-plugin-2.7.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-deploy-plugin:2.7: Plugin org.apache.maven.plugins:maven-deploy-plugin:2.7 or
one of its dependencies could not be resolved: Failed to read artifact descripto
r for org.apache.maven.plugins:maven-deploy-plugin:jar:2.7
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-site-plugin/3.3/maven-site-plugin-3.3.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-site-plugin:3.3: Plugin org.apache.maven.plugins:maven-site-plugin:3.3 or one
of its dependencies could not be resolved: Failed to read artifact descriptor fo
r org.apache.maven.plugins:maven-site-plugin:jar:3.3
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-antrun-plugin/1.3/maven-antrun-plugin-1.3.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-antrun-plugin:1.3: Plugin org.apache.maven.plugins:maven-antrun-plugin:1.3 or
one of its dependencies could not be resolved: Failed to read artifact descripto
r for org.apache.maven.plugins:maven-antrun-plugin:jar:1.3
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-assembly-plugin/2.2-beta-5/maven-assembly-plugin-2.2-beta-5.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-assembly-plugin:2.2-beta-5: Plugin org.apache.maven.plugins:maven-assembly-plu
gin:2.2-beta-5 or one of its dependencies could not be resolved: Failed to read
artifact descriptor for org.apache.maven.plugins:maven-assembly-plugin:jar:2.2-b
eta-5
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-dependency-plugin:2.8: Plugin org.apache.maven.plugins:maven-dependency-plugin
:2.8 or one of its dependencies could not be resolved: Failed to read artifact d
escriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.8
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-release-plugin/2.3.2/maven-release-plugin-2.3.2.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-release-plugin:2.3.2: Plugin org.apache.maven.plugins:maven-release-plugin:2.3
.2 or one of its dependencies could not be resolved: Failed to read artifact des
criptor for org.apache.maven.plugins:maven-release-plugin:jar:2.3.2
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-metadata.xml
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metada
ta.xml
[WARNING] Could not transfer metadata org.apache.maven.plugins/maven-metadata.xm
l from/to central (https://repo.maven.apache.org/maven2): sun.security.validator
.ValidatorException: PKIX path building failed: sun.security.provider.certpath.S
unCertPathBuilderException: unable to find valid certification path to requested
target
[WARNING] Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/
to central (https://repo.maven.apache.org/maven2): sun.security.validator.Valida
torException: PKIX path building failed: sun.security.provider.certpath.SunCertP
athBuilderException: unable to find valid certification path to requested target

[WARNING] Failure to transfer org.apache.maven.plugins/maven-metadata.xml from h
ttps://repo.maven.apache.org/maven2 was cached in the local repository, resoluti
on will not be reattempted until the update interval of central has elapsed or u
pdates are forced. Original error: Could not transfer metadata org.apache.maven.
plugins/maven-metadata.xml from/to central (https://repo.maven.apache.org/maven2
): sun.security.validator.ValidatorException: PKIX path building failed: sun.sec
urity.provider.certpath.SunCertPathBuilderException: unable to find valid certif
ication path to requested target
[WARNING] Failure to transfer org.codehaus.mojo/maven-metadata.xml from https://
repo.maven.apache.org/maven2 was cached in the local repository, resolution will
not be reattempted until the update interval of central has elapsed or updates
are forced. Original error: Could not transfer metadata org.codehaus.mojo/maven-
metadata.xml from/to central (https://repo.maven.apache.org/maven2): sun.securit
y.validator.ValidatorException: PKIX path building failed: sun.security.provider
.certpath.SunCertPathBuilderException: unable to find valid certification path t
o requested target
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.623 s
[INFO] Finished at: 2016-08-01T12:07:53-04:00
[INFO] Final Memory: 13M/106M
[INFO] ------------------------------------------------------------------------
[b:tk9ypp5x][ERROR] No plugin found for prefix 'archetype' in the current project and in the
plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the
repositories [local (C:\Users\chowdhurym\.m2\repository), central (https://repo.
maven.apache.org/maven2)] -> [Help 1]
[/b:tk9ypp5x][ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundF
orPrefixException

C:\Users\chowdhurym\maven>

are using a vpn/proxy?

VPN

that is why it is not working.

try this
http://stackoverflow.com/questions/13722418/can-maven-open-a-vpn-connection

thanks!!!