Knowledge Base - Patch Download Failure - "Error 403" or "Unknown Host Exception"

Problem

When Patch Connect Plus downloads patches from vendor sites, the process fails with "Error Code 403 or Unknown Host Exception".

Cause

Error code 403 occurs when the web server is not reachable or access to the server has been denied. This might happen due to various reasons such as, forbidden access, or connectivity issues.

Resolution

  1. Ensure that the configured Proxy settings has permission to download the install-able files from the below mentioned websites
  2. Applications Domain URLs
    3D XML Player https://www.3ds.com
    7 zip https://www.7-zip.org , https://raw.githubusercontent.com
    8x8 - Virtual Office https://vod-updates.8x8.com
    8x8Click2Pop https://support.8x8.com , https://8x8.okta.com
    AbleWord http://www.ableword.net
    ActiveState ActivePython 2 https://downloads.activestate.com , https://www.activestate.com
    Adobe http://*.adobe.com
    Adobe Shockwave Player https://fpdownload.macromedia.com
    AdoptOpenJDK ,AutoHotkey,Bitwarden,BorderlessGaming,BowPad,Brackets,Client Center for Configuration Manager ,CMake,Conan Package Manager,ConEmu,Draw.io,DupeGuru,Engauge Digitizer,Ext2Fsd,Get_iPlayer,gh-api-cli,Git,Git Extensions,Git LFS,GitAhead,GPL Ghostscript,Graylog Sidecar,Greenshot,grepWin,HandBrake ,Hosts File Editor,IcedTea-Web,ImageGlass,KeePassXC,LAVFilters,LibreCAD,LLVM,Markdown edit,MongoDB Compass,mpv.net,mRemoteNG,NAPS,Nextcloud,Nomacs - Image Lounge,Notepad++,NSClient++,NVS,OpenJDK OpenShot,OpenWebStart,OWASP Zed Attack Proxy,Pandoc,Password Safe for Windows,PathCopy,PDFsam Basic,PeaZip,PowerShell,Programmers Notepad,Qalculate,quicklook,Red Notebook,Rocket Chat,ScreenToGif,ShareX,Simplenote,Spyder,StExBar,StreamLink Twitch GUI,StreamLink Twitch GUI (x64),Terminals,TeXworks,VidCutter,VSCodium,Zeal https://github.com , https://github-releases.githubusercontent.com
    Advanced Renamer https://www.advancedrenamer.com
    AI Viewer http://aiviewer.com , https://aiviewer.com
    Aimp https://aimp.ru
    Airdroid https://dl.airdroid.com
    AirParrot ,AirSquirrels Reflector,AirSquirrels Reflector Teacher https://download.airsquirrels.com
    AirServer Universal https://dl.airserver.com
    Airtame https://airtame-app.b-cdn.net
    Alibre Design x64 https://alibre-usa.s3.us-west-1.amazonaws.com
    Allway Sync https://allwaysync.com
    Amazon Corretto https://corretto.aws
    Amazon EC2Launch,Amazon Redshift ODBC Driver,Amazon SSM Agent,EC2ConfigService,SQLyog Community,WickrMe,WickrPro https://s3.amazonaws.com
    Amazon WorkSpaces,QlikView,Splashtop Streamer,Zoom Skype for Business Plugin https://*.cloudfront.net
    Anaconda 3 https://repo.anaconda.com
    Apple iTunes,Apple Safari https://secure-appldnld.apple.com , https://appldnld.apple.com
    Araxis Merge https://www.araxis.com , https://downloads.araxis.com
    Archi https://www.archimatetool.com
    Arixcel Explorer https://www.arixcel.com
    Artweaver https://www.artweaver.de
    AstroGrep,DisplayCAL,FrostWire,JEdit,Keepass,Pidgin,PyScripter,sciDAVis,Tux Paint,WinDjView,WinMerge,WinSCP https://*.dl.sourceforge.net
    ATnotes Version,HomeBank http://atnotes.free.fr , http://homebank.free.fr
    Attendant Pro https://downloads.landiscomputer.com
    Auslogics DiskDefrag,Auslogics Duplicate File Finder,Auslogics Registry Cleaner http://downloads.auslogics.com
    Authenticator https://download.inwebo.com
    Autodesk Design Review https://download.autodesk.com
    Azure Data Studio https://sqlopsbuilds.azureedge.net
    Bandicam,Bandicut https://dl.bandicam.com
    Bandizip,Honeycam https://dl.bandisoft.com
    Barracuda Network Access Client https://d.barracudanetworks.com
    Beyond Compare https://www.scootersoftware.com
    BigAntSoft Messenger https://www.bigantsoft.com
    Bitfocus Companion https://builds.bitfocus.io
    bitrix24 https://dl.bitrix24.com
    BleachBit https://download.bleachbit.org
    Blender https://download.blender.org
    Blender (x64) https://ftp.nluug.nl
    Blue Jeans Outlook addins,BlueJeans https://swdl.bluejeans.com
    Bluebeam Revu 2019 https://downloads.bluebeam.com
    BlueJ https://www.bluej.org
    BlueJeans Events http://swdl.bluejeans.com , https://swdl.bluejeans.com
    BOINC https://boinc.berkeley.edu
    Box Drive,Box for Office,Box Sync,Box Tools https://e3.boxcdn.net
    Bulk Rename Utility https://www.s3.tgrmn.com
    Calibre https://download.calibre-ebook.com
    Camtasia, SnagIt https://download.techsmith.com
    CCleaner,Speccy https://download.ccleaner.com
    CDBurnerXP https://download.cdburnerxp.se
    Cerberus FTP Server https://www.cerberusftp.com
    Charles https://www.charlesproxy.com
    cherrytree https://www.giuspen.com
    Cisco Jabber,Cisco Webex Meetings,Cisco Webex Meetings Virtual Desktop Plug-in,Cisco Webex Productivity Tools,Network Recording Player,WebEx Recorder and Player,WebEx Teams https://*.webex.com
    Cisco Proximity https://proximity.cisco.com
    Citrix Files https://dl.sharefile.com
    Citrix Files for Outlook,Citrix Receiver LTSR,Citrix Workspace,Citrix Workspace LTSR https://downloads.citrix.com , https://downloadplugins.citrix.com
    Clamav https://www.clamav.net , https://clamav-site.s3.amazonaws.com
    ClickUp https://attachments3.clickup.com
    Cobian Backup 11 Gravity https://files.cobiansoft.com
    CollageIt https://www.collageitfree.com
    ColorImpact https://www.tigercolor.com
    Core Temp https://www.alcpu.com
    CoreFTP LE http://www.coreftp.com
    CPUID CPU-Z http://download.cpuid.com , https://download.cpuid.com
    CPUID HWMonitor https://download.cpuid.com
    Crypt-o https://www.soft-o.com
    Cyberduck https://update.cyberduck.io , https://a48823c7ec3cf4539564-60c534a1284a12ce74ef84032e9b4e46.ssl.cf1.rackcdn.com
    DBeaver https://dbeaver.io , https://download.dbeaver.com
    DBeaver x64 https://download.dbeaver.com
    DBschema https://dbschema.com
    DeepBurner https://www.deepburner.com
    Dell Command Update,Dell SupportAssist Enterprise,Dell SupportAssist for Business (x64) https://dl.dell.com , https://downloads.dell.com
    Deluge,MuseScore 2,Open Codecs https://ftp.osuosl.org
    Dev-C++ https://nchc.dl.sourceforge.net
    DiKe https://rinnovofirma.infocert.it
    Docker Desktop https://desktop.docker.com
    Doxygen https://www.doxygen.nl
    DreamPie https://github.com , https://github.s3.amazonaws.com
    Dropbox https://clientupdates.dropboxstatic.com
    Druva inSync,Druva inSync Cloud https://downloads.druva.com
    DU Meter,dumeter https://dl2.hageltech.com
    Duo Authentication for Windows Logon,Duo Device Health Application,Duo Security Authentication Proxy https://dl.duosecurity.com
    Egnyte Connect,Egnyte Desktop Sync,Egnyte for Microsoft Office Desktop https://egnyte-cdn.egnyte.com
    eM Client https://www.emclient.com , https://cdn-dist.emclient.com
    Embrava Connect https://f.hubspotusercontent40.net
    EmEditor,Jabra Direct https://*.blob.core.windows.net
    Enterprise Architect https://www.sparxsystems.com
    EPOS Audio 3CX Plugin,HeadSetup Pro https://epi.eposaudio.com , https://www.eposaudio.com
    ESET Endpoint Antivirus,ESET Endpoint Security,ESET File Security https://download.eset.com
    Evernote https://cdn1.evernote.com
    Everything https://www.voidtools.com
    ExacqVision client,ExacqVision Webservice https://cdnpublic.exacq.com
    FactSet https://download.factset.com
    FastStone Image Viewer https://www.faststonesoft.net
    FileCloudDrive,FileCloudSync https://cdn.codelathe.com
    FileZilla Client https://download.filezilla-project.org
    FireAlpaca https://www.portalgraphics.net
    FlashBack Express 5,FlashBack Pro 5 http://ds.bbsoftware.co.uk , https://files.bbsoftware.co.uk
    FlashDevelop https://www.flashdevelop.org
    FMFirefoxCEESR https://hicap.frontmotion.com
    Fotosizer https://downloads.fotosizer.com
    Foxit Reader,Foxit PhantomPDF,Foxit PDF Editor https://cdn09.foxitsoftware.com , https://cdn01.foxitsoftware.com
    Free Download Manager https://dn3.freedownloadmanager.org
    Free PDF https://www.pdfzilla.com
    Freemake Video Converter http://download.freemake.net
    Freeplane https://udomain.dl.sourceforge.net , https://sourceforge.net
    FreePortScanner https://www.nsauditor.com
    FTPGetter Standard https://www.ftpgetter.com
    Gadwin PrintScreen https://www.gadwin.com
    GanttProject https://dl.ganttproject.biz
    Geany https://download.geany.org
    Geneious Prime https://assets.geneious.com
    GeoGebra https://download.geogebra.org
    GIMP https://download.gimp.org , https://ftp.fau.de
    Glary Utilities https://download.glarysoft.com
    GlassWire https://download.glasswire.com
    Glogg https://glogg.bonnefon.org
    GMetrixSms6 https://www.gmetrix.net
    Go Programming Language https://golang.org , https://dl.google.com
    GoCD Agent https://download.gocd.org
    GoodSync https://www.goodsync.com
    Google Chrome,Google Chrome Remote DesktopHost,Google Credential Provider for Windows,Google Drive,Google Drive File Stream,Google Earth,Google Earth Pro https://dl.google.com
    GoTo (x64) https://goto-desktop.goto.com
    GoTo Opener https://launch.getgo.com
    GoToMeeting https://builds.cdn.getgo.com
    Gpg4win https://files.gpg4win.org
    Hamachi,LogMeIn,LogMeIn Client https://secure.logmein.com
    HandBrake https://download.handbrake.fr
    Hangouts Chat https://dl.google.com
    HashTab http://implbits.com
    HeidiSQL https://www.heidisql.com
    Helix Versioning Engine https://www.perforce.com , https://cdist2.perforce.com
    Helix Versioning Engine (x64) http://www.perforce.com , https://cdist2.perforce.com
    Honeyview http://dl.bandisoft.com
    HttpMaster Express Edition,HttpMaster Professional Edition https://www.httpmaster.net
    Huddle https://public.huddle.com
    Hugin,Keepass,KeePass Password Safe Professional Edition,Open Office,PNotes.NET,ProjectLibre,TurboVNC,Vuze https://excellmedia.dl.sourceforge.net , https://sourceforge.net
    Icinga 2 https://packages.icinga.com
    iCloud http://updates-http.cdn-apple.com
    IETester https://ietester.csfront.com
    ImgBurn https://download.imgburn.com
    Inno Setup https://files.jrsoftware.org
    InstEd http://apps.instedit.com
    IrfanView https://files02.tchspt.com
    Iridium Browser https://dl.iridiumbrowser.de
    IZArc https://www.izarc.org
    Jamovi (x64) https://www.jamovi.org
    Java for Business 7Java Runtime Environment 1.6,Java Runtime Environment 1.7,Java SE Development Kit http://download.oracle.com , https://download.oracle.com
    Java Runtime Environment 1.8 https://javadl.oracle.com , https://sdlc-esd.oracle.com
    Java-Editor http://www.javaeditor.org
    JOSM https://josm.openstreetmap.de
    JTAlert https://files.hamapps.com
    K-Lite Codec https://files3.codecguide.com
    KakaoTalk http://app.pc.kakao.com
    KeePass Password Safe Classic Edition http://excellmedia.dl.sourceforge.net , https://sourceforge.net
    Keeper Password Manager https://keepersecurity.com
    Kerio Control VPN Client https://cdn.kerio.com
    Keybase https://prerelease.keybase.io
    Krita https://download.kde.org , https://iso.mirrors.ustc.edu.cn
    Krita (x64) https://cdn.download.kde.org
    Launchy https://www.launchy.net
    Lenovo System Update https://download.lenovo.com
    Lens https://lens-binaries.s3-eu-west-1.amazonaws.com
    LibreOffice,LibreOffice Help Pack https://download.documentfoundation.org , https://mirrors.estointernet.in
    LiClipse https://www.mediafire.com , https://download1370.mediafire.com
    Lifesize Installer https://download.lifesizecloud.com
    LifeView https://files.ivari.ca
    Listary https://www.listary.com
    LogFusion,Tray status https://binaryfortressdownloads.com
    Logtalk https://logtalk.org
    LyX https://ftp.lip6.fr
    MailStore Client,MailStore Outlook Add-in https://download.mailstore.com
    Mattermost https://releases.mattermost.com
    Maxthon https://dl.maxthon.com
    MaxTo https://files.maxto.net
    MediaMonkey https://www.mediamonkey.com
    MicroDicom DICOM viewer http://www.microdicom.com
    Microsoft Edge for business https://msedge.sf.dl.delivery.mp.microsoft.com
    Microsoft One drive https://oneclient.sfx.ms
    Microsoft Power BI Desktop,PBI Desktop RS https://download.microsoft.com
    Microsoft Teams (Machine Wide Installer) https://statics.teams.cdn.office.net
    Microsoft Visual Studio Code https://az764295.vo.msecnd.net
    Mirillis MonfloServer,Splash https://downloads.mirillis.com , https://download.mirillis.com
    Mixxx https://downloads.mixxx.org , http://downloads.mixxx.org
    Mixxx (x64) https://downloads.mixxx.org
    MOOSLight https://www.moosprojectviewer.com
    Mozilla Firefox ESR,Mozilla Thunderbird,Mozilla Firefox https://download-installer.cdn.mozilla.net
    Mozilla Thunderbird ESR http://download-installer.cdn.mozilla.net
    MozyEnterprise http://www.mozyenterprise.com
    MozyHome,MozyPro http://secure.mozy.com
    Mp3tag https://download.mp3tag.de
    MQTT.fx https://www.jensd.de
    Multi Commander http://multicommander.com
    Mumble https://download.mumble.com
    MuseScore 3 https://cdn.jsdelivr.net
    MyPhoneExplorer https://www.fjsoft.at
    NCPA https://assets.nagios.com
    Nessus Agent https://www.tenable.com
    Netpas Distance,Netpas Estimator,Netpas MMA https://file.netpas.net
    Nexusfont https://s3.ap-northeast-2.amazonaws.com
    NFOPad https://www.truehumandesign.se
    Nitro Pro http://install.nitropdf.com , https://downloads.gonitro.com
    Node js https://nodejs.org
    NoteTab Light https://www.notetab.com
    OBS Studio https://cdn-fastly.obsproject.com
    Ocenaudio https://www.ocenaudio.com
    OpenJDK JRE 11 redhat https://access.cdn.redhat.com , https://access.redhat.com
    OpenVPN https://swupdate.openvpn.org
    OpenVPN Connect https://openvpn.net , https://swupdate.openvpn.net
    Opera Stable https://get.geo.opera.com
    Oracle VM VirtualBox https://download.virtualbox.org
    Oxygen XML Developer,Oxygen XML Editor https://www.oxygenxml.com , https://mirror.oxygenxml.com
    Pale Moon https://rm-eu.palemoon.org
    Paralells Client https://download.parallels.com
    pdf tools,PDF-XChange Viewer https://downloads.pdf-xchange.com
    PDF-XChange Editor http://downloads.pdf-xchange.com
    PDF24 Creator https://stx.pdf24.org
    Perimeter 81 https://static.perimeter81.com
    pgAdmin 4 https://ftp.postgresql.org
    PhonerLite https://www.phoner.de
    Plantronics Hub https://www.poly.com
    Plex Media Player,Plex Media Server https://downloads.plex.tv
    PLSQL Developer https://www.allroundautomations.com
    Poedit https://download.poedit.net
    Poll Everywhere https://polleverywhere-app.s3.amazonaws.com
    Polycom RealPresence Desktop https://downloads.polycom.com
    PremiumSoft Navicat Essentials http://download3.navicat.com
    Promodag https://files.promodag.com
    ProtonVPN https://protonvpn.com
    Pulse Secure https://www.pulsesecure.net
    PuTTY https://the.earth.li
    PuTTY https://github.com , https://raw.githubusercontent.com
    Python 2.7 https://www.python.org
    Qemu https://qemu.weilnetz.de
    Qliq CONNECT https://webprod.qliqsoft.com
    QSYNC https://download.qnap.com
    QueueExplorer https://www.cogin.com
    QuiteRSS https://quiterss.org
    R for Windows https://cran.r-project.org
    Razor SQL https://s3.dualstack.us-east-1.amazonaws.com
    RealPopup https://www.realpopup.it
    Recuva https://download.piriform.com
    RedGate SQL Toolbelt https://download.red-gate.com
    Remote Desktop Manager https://cdn.devolutions.net
    RenWeb.com https://rwfs.renweb.com
    Rhino 5 Evaluation http://files.na.mcneel.com
    RingCentral Meetings,RingCentral Phone http://dn.ringcentral.com , http://downloads.ringcentral.com
    RoboForm https://www.roboform.com
    Royal TS https://download.royalapps.com
    RStudio https://download1.rstudio.org
    Scratch https://downloads.scratch.mit.edu
    Screaming Frog SEO Spider https://download.screamingfrog.co.uk
    Screenpresso https://www.screenpresso.com
    Seafile https://s3.eu-central-1.amazonaws.com
    SeaMonkey https://archive.mozilla.org
    Serviio https://download.serviio.org
    Silverjuke https://www.silverjuke.net
    Simple Sticky Notes https://www.simplestickynotes.com
    Simply Fortran https://download.simplyfortran.com
    Skype https://download.skype.com
    Slack https://downloads.slack-edge.com
    Slik Subversion https://sliksvn.com
    SnapGene Viewer https://cdn.snapgene.com
    SourceTree Enterprise https://product-downloads.atlassian.com
    Splashtop Business https://download.splashtop.com
    Splunk Enterprise Splunk Universal Forwarder https://download.splunk.com
    SRWare Iron https://www.srware.net
    Sticky Password https://downloads.stickypassword.com
    STP Viewer http://stpviewer.com , https://stpviewer.com
    SugarSync https://download.sugarsync.com
    SumatraPDF https://kjkpubsf.sfo2.digitaloceanspaces.com
    Swift https://swift.im
    SyncBackFree https://www.2brightsparks.com
    Syncovery https://www.syncovery.com
    Syncplicity https://download.syncplicity.com
    Synology Drive Client https://global.download.synology.com
    Tableau Desktop,Tableau Prep Builder,Tableau Reader https://downloads.tableau.com
    TagScanner https://www.xdlab.ru
    TeamDrive https://download.teamdrive.net
    TeamSpeak 3 Client https://files.teamspeak-services.com
    TeamViewer,TeamViewer Host https://download.teamviewer.com , https://dl.teamviewer.com
    TED Notepad http://jsimlo.sk
    Tera Term https://jaist.dl.osdn.jp
    TestNav https://download.testnav.com
    TeXnicCenter https://sourceforge.net
    TextExpander https://cdn.textexpander.com
    TextPad https://www.textpad.com
    Think-cell https://static.think-cell.com
    TightVNC,TightVNC Server,TightVNC Viewer https://www.tightvnc.com
    Tomahawk https://download.tomahawk-player.org
    TortoiseGit https://download.tortoisegit.org
    TortoiseHG x64 https://www.mercurial-scm.org
    TortoiseSVN https://mirrors.tuna.tsinghua.edu.cn
    TreeSize Free https://www.jam-software.com , https://downloads.jam-software.de
    TSPrint Client,TSPrint Server https://www.terminalworks.com
    Tugzip https://www.koeln-krimis.de
    UltraSearch https://downloads.jam-software.de
    UltraVNC https://www.uvnc.eu
    UrBackup http://hndl.urbackup.org
    Vagrant https://releases.hashicorp.com
    Veeam Agent For Windows https://download2.veeam.com
    VI MonitorPlus http://downloadvi.com
    VirtualCloneDrive https://www.elby.ch
    Viscosity for Windows https://swupdate.sparklabs.com
    VitalSource Bookshelf https://downloads.vitalbook.com
    Vivaldi https://downloads.vivaldi.com
    VLC Media Player https://download.videolan.org , https://mirrors.estointernet.in
    VMware Horizon Client,VMware Player,VMware Remote Console,vmware tools,VMware Workstation https://*.vmware.com
    VNC Server,VNC Viewer https://www.realvnc.com
    VooV meeting,WeChat,WXwork https://down.qq.com , https://dldir1.qq.com
    WatchGuard Mobile VPN with SSL client https://cdn.watchguard.com
    Waterfox (x64) https://storage-waterfox.netdna-ssl.com
    WeMeet https://updatecdn.meeting.qq.com
    Winamp https://download.nullsoft.com
    Windows Remote Desktop https://query.prod.cms.rt.microsoft.com
    Windows Repair https://www.tweaking.com
    Wing Personal IDE https://wingware.com
    WinRAR https://www.rarlab.com
    WinUtilities Free Edition https://www.pcclean.io
    Winzip https://download.winzip.com
    Wireshark https://2.na.dl.wireshark.org
    Wise Disk Cleaner,Wise Folder Hider,Wise Hotkey,Wise JetSearch,Wise Memory Optimizer,Wise Program Uninstaller,Wise System Monitor https://downloads.wisecleaner.com
    XMind 8 https://dl3.xmind.net
    XnConvert http://download.xnview.com , https://download.xnview.com
    XnView,XnViewMP https://download.xnview.com
    Yarn https://classic.yarnpkg.com , https://github-releases.githubusercontent.com
    Zimbra Connector for Microsoft Outlook https://files.zimbra.com
    Zoho Mail - Desktop https://downloads.zohocdn.com
    Zoom,Zoom Citrix HDX Media Plugin,Zoom Host for VDI,Zoom Notes Plugin,Zoom Outlook Plugin,Zoom Plugin for Vmware Horizon Client,Zoom Skype for Business Plugin https://cdn.zoom.us
    Zulu JDK,Zulu JRE https://cdn.azul.com
  3. In case if this problem continues, kindly Contact Support