I have Jenkins 2.479.3 installed on Windows Server. The server is behind proxy, so I provided the host, port and username with password. Checked it more than twice if that configuration is correct. However, when I try to update plugins there is an error (below). Lately Jenkins was updated to the version I mentioned. It seems to be ok before the update (previously was 2.414.3). Anyone can help me out with this problem?
2025-01-20 09:53:34.757+0000 [id=31103] INFO hudson.util.Retrier#start: The attempt #1 to do the action check updates server failed with an allowed exception:
java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 407 Proxy Authentication Required"
at java.base/sun.net.www.protocol.http.HttpURLConnection.doTunneling0(HttpURLConnection.java:2286)
at java.base/sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:2158)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1690)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1614)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:223)
at hudson.model.DownloadService.loadJSON(DownloadService.java:122)
at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:217)
at hudson.model.UpdateSite.updateDirectlyNow(UpdateSite.java:212)
at hudson.PluginManager.checkUpdatesServer(PluginManager.java:2168)
at hudson.util.Retrier.start(Retrier.java:62)
at hudson.PluginManager.doCheckUpdatesServer(PluginManager.java:2139)
at jenkins.DailyCheck.execute(DailyCheck.java:93)
at hudson.model.AsyncPeriodicWork.lambda$doRun$0(AsyncPeriodicWork.java:102)
at java.base/java.lang.Thread.run(Thread.java:1583)
2025-01-20 09:53:34.758+0000 [id=31103] INFO hudson.util.Retrier#start: Calling the listener of the allowed exception 'Unable to tunnel through proxy. Proxy returns "HTTP/1.1 407 Proxy Authentication Required"' at the attempt #1 to do the action check updates server
2025-01-20 09:53:34.758+0000 [id=31103] INFO hudson.util.Retrier#start: Attempted the action check updates server for 1 time(s) with no success
Jenkins setup:
Jenkins: 2.479.3
OS: Windows Server 2019 - 10.0
Java: 21.0.5 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
ace-editor:1.1
ant:497.v94e7d9fffa_b_9
antisamy-markup-formatter:162.v0e6ec0fcfcf6
apache-httpcomponents-client-4-api:4.5.14-208.v438351942757
asm-api:9.7.1-95.v9f552033802a_
authorize-project:1.7.1
bootstrap5-api:5.3.2-3
bouncycastle-api:2.30.1.78.1-248.ve27176eb_46cb_
branch-api:2.1128.v717130d4f816
build-timeout:1.31
caffeine-api:3.1.8-133.v17b_1ff2e0599
checks-api:2.0.2
cloudbees-folder:6.858.v898218f3609d
command-launcher:115.vd8b_301cc15d0
commons-lang3-api:3.17.0-84.vb_b_938040b_078
commons-text-api:1.12.0-129.v99a_50df237f7
credentials:1309.v8835d63eb_d8a_
credentials-binding:642.v737c34dea_6c2
cvs:2.19.1
display-url-api:2.204.vf6fddd8a_8b_e9
durable-task:523.va_a_22cf15d5e0
echarts-api:5.4.0-7
eddsa-api:0.3.0-4.v84c6f0f4969e
email-ext:2.102
envinject:2.908.v66a_774b_31d93
envinject-api:1.199.v3ce31253ed13
extended-read-permission:53.v6499940139e5
external-monitor-job:215.v2e88e894db_f8
font-awesome-api:6.4.2-1
git:5.2.1
git-client:4.5.0
github:1.37.3.1
github-api:1.318-461.v7a_c09c9fa_d63
github-branch-source:1751.v90e17c48a_6a_c
gradle:2.9
gson-api:2.11.0-41.v019fcf6125dc
handlebars:3.0.8
instance-identity:185.v303dc7c645f9
instant-messaging:2.698.ve71a_06c95cec
ionicons-api:74.v93d5eb_813d5f
jabber:1.42
jackson2-api:2.17.0-379.v02de8ec9f64c
jakarta-activation-api:2.1.3-1
jakarta-mail-api:2.1.3-1
javadoc:243.vb_b_503b_b_45537
javax-activation-api:1.2.0-7
javax-mail-api:1.6.2-10
jaxb:2.3.9-1
jdk-tool:80.v8a_dee33ed6f0
jjwt-api:0.11.5-77.v646c772fddb_0
jquery3-api:3.7.1-1
jsch:0.2.8-65.v052c39de79b_2
json-api:20240303-41.v94e11e6de726
junit:1300.v03d9d8a_cf1fb_
ldap:711.vb_d1a_491714dc
mailer:472.vf7c289a_4b_420
mapdb-api:1.0.9-28.vf251ce40855d
mask-passwords:173.v6a_077a_291eb_5
matrix-auth:3.2.2
matrix-project:832.va_66e270d2946
maven-plugin:3.23
mina-sshd-api-common:2.11.0-86.v836f585d47fa_
mina-sshd-api-core:2.11.0-86.v836f585d47fa_
momentjs:1.1.1
msbuild:1.30
nuget:1.1
octopusdeploy:4.0.0
okhttp-api:4.11.0-157.v6852a_a_fa_ec11
pam-auth:1.10
pipeline-build-step:516.v8ee60a_81c5b_9
pipeline-github-lib:42.v0739460cda_c4
pipeline-graph-analysis:202.va_d268e64deb_3
pipeline-groovy-lib:689.veec561a_dee13
pipeline-input-step:477.v339683a_8d55e
pipeline-milestone-step:111.v449306f708b_7
pipeline-model-api:2.2150.v4cfd8916915c
pipeline-model-definition:2.2150.v4cfd8916915c
pipeline-model-extensions:2.2150.v4cfd8916915c
pipeline-rest-api:2.34
pipeline-stage-step:305.ve96d0205c1c6
pipeline-stage-tags-metadata:2.2150.v4cfd8916915c
pipeline-stage-view:2.34
plain-credentials:143.v1b_df8b_d3b_e48
plugin-util-api:5.1.0
popper-api:1.16.1-3
popper2-api:2.11.6-4
powershell:2.1
publish-over:0.22
publish-over-ssh:1.25
resource-disposer:0.23
role-strategy:689.v731678c3e0eb_
scm-api:696.v778d637b_a_762
script-security:1369.v9b_98a_4e95b_2d
snakeyaml-api:2.3-123.v13484c65210a_
ssh-credentials:308.ve4497b_ccd8f4
ssh-slaves:2.916.vd17b_43357ce4
sshd:3.330.vc866a_8389b_58
structs:338.v848422169819
text-file-operations:1.3.2
thinBackup:1.18
timestamper:1.26
token-macro:384.vf35b_f26814ec
translation:1.16
trilead-api:2.147.vb_73cc728a_32e
variant:60.v7290fc0eb_b_cd
workflow-aggregator:596.v8c21c963d92d
workflow-api:1336.vee415d95c521
workflow-basic-steps:1042.ve7b_140c4a_e0c
workflow-cps:3806.va_3a_6988277b_2
workflow-durable-task-step:1289.v4d3e7b_01546b_
workflow-job:1360.vc6700e3136f5
workflow-multibranch:756.v891d88f2cd46
workflow-scm-step:415.v434365564324
workflow-step-api:678.v3ee58b_469476
workflow-support:926.v9f4f9b_b_98c19
ws-cleanup:0.45