How to Fix NET::ERR_CERT_COMMON_NAME_INVALID in ...

Corrupted cache or cookies can be causing an “err_cert_common_name_invalid” error in your Chrome browser. To clear them, press CTRL+SHIFT+Del on ... HowtoFixNET::ERR_CERT_COMMON_NAME_INVALIDinChrome?PostedonSeptember6,2021byClickSSL StepbyStepGuidetoFixingNET::ERR_CERT_COMMON_NAME_INVALIDinChromeBrowser WhenyoubuySSLcertificatebutnotproperlyinstallandyouarestartfacingSSLcertificate/HTTPSerrorsandsecuritywarningonGoogleChrome.Seeing“net::err_cert_common_name_invalid”errorcodewhiletryingtologintoyourwebsiteisoneofthem,asshownintheimagebelow. Whatmightbecausingit?AnythingfromservermisconfigurationofthewebsiteyouaretryingtovisitandbugsinChrometothird-partyextensionsoryoursecurityprogramscouldbetheissue. Thisarticlewillhighlightdifferentissuesthatmightbecausingthe“err_cert_common_name_invalid”errorinyourChromebrowserandshowyouhowtofixthem. HowtoFixNET::ERR_CERT_COMMON_NAME_INVALIDinChrome? 1.Startfromthebasics Isthedateandtimeonyourdesktopcorrectlyset?Sometimes,minorthingssuchassettingincorrecttimeanddateonyourPCmaycausebiggerproblems.Youcanfixthissimpleerrorimmediately. 2.Lookforproblemsinyourbrowserextensions Forthat,first,turnonyourprivatebrowsing/incognitomodeonyourChromebrowser. Thismightsolveyourissue,butifitpersists,youwillhavetosearchtheextensionsonebyonetofindtheculprit. Todothat,gotoyourGoogleChromebrowser,clickonthethreedotsiconontheright-handsideofthebrowser.Next,select“MoreTools”>“Extensions”fromthedrop-downmenu. Next,activateoneextensionatatimeandbrowseyoursiteuntilyoufindouttheculprit.Deletetheextensionthatiscausingtheerrorwhenyoufindit. 3.ClearCacheandData Corruptedcacheorcookiescanbecausingan“err_cert_common_name_invalid”errorinyourChromebrowser. Toclearthem,pressCTRL+SHIFT+Delonthekeyboard,whichwillleadyoutoanewpage.Lookfor‘Cookiesandothersitedata’and‘Cachedimagesandfiles,’andthen,clickonClearDATA. Youcanthenvisittheproblematicwebpageandseeiftheissuehasbeenresolved. 4.ClearSSLCommonNameMismatchError Intheimagebelow,youcanseethatthenamemismatcherrorasthecommonname(domainname)intheSSLcertificatedoesn’tmatchtheaddressintheaddressbarofthebrowser. Probably,thereisadifferentcertificateinstalledonthedomainname.Checktoconfirm“issuedto”domaininformationtothedomaincertificate. Also,ascertainthatthebrowsingdomainandsubdomainiscoveredunderSANandWildcardSSLcertificate.SinceSANcertificatecountseachdomainseparatelyandwildcardcertificatecoverssingle-levelsubdomains,itwillleadtoerrorincaseyoubrowsedomainorsubdomainthatisnotcoveredbyyourcertificate. 5.Verifythesiteaddress DoesyoursiteaddressstartwithHTTPSorHTTP?IfyouchangeyoursiteprotocoltoHTTPSfromHTTPwhileyouhaven’tinstalledanSSLcertificate,itcancause“NET:ERR_CERT_COMMON_NAME_INVALID”error. IfyouhaveaWordPresswebsite,youcangototheWordPressaccountgeneralsettingsandverifytheURL. 6.CheckifYourbrowserisRedirectingVisitorstoYourOtherWebsiteVersion Isyourbrowserforcefullyredirectingtraffictotheotherversionofyourwebsite?Ifitis,youhavetoadjustyoursettingstostopit. Todothat,opentheChromebrowserandclickonthethreedotsiconintheupperrightcorner.Adrop-downmenuwillappear.SelectSettingsandscrolldowntothebottomofthenextpageandclickAdvanced. Next,gotothePrivacyandSecuritysectionandselectContentSettings>Pop-upsandredirects.TheBlocked(recommended)featurehastobeswitchedon. 7.CheckforWWWvs.Non-WWW Also,checkwhetheryou’reforcingvisitorsthroughaWWWornon-WWWversionofthedomain.NotallSSLcertificateswillcoverboththeWWWandnon-WWWversionsofasitebydefault.Ensurethecertificateyouowncoverstheversionofthedomainyourwebsitedefaultsto. 8.ClearSSLCache SSLcachecancauseanamemismatcherror.Toclearthecache,clickoninternetproperties,gotothecontenttab,andclearSSLcache. OnyourChromebrowser,youwillhavetogotosettings,clickontheadvancedsettings,andnextontheChangeProxySettings.YouwillfindcleartheSSLstateoption.ClickonittoresolveSSLcommonnamemismatcherror. 9.SetYourProxySettingstoAutomaticallyDetectSettings Theproxysettingswilldetermineyourbrowsingenvironment.Anymisconfigurationcanlimityoutobrowseanywebsites.YourproxysettinghastobesettoAutomaticallydetectsettings. Toresolvetheissue,right-clickontheNetworkAccessiconandgotointernetsettings.Next,taponConnectionandclickonLANSettings. YouwillnowseeaboxwhereyouhavetochecktheboxagainsttheAutomaticallydetectsettings.ClickontheOKbuttononcedone. 10.DisableAntivirusorFirewall Antivirusorfirewallprogramscanmesswithhttpssites.Seethatitisnotcheckmarkedwithdisablinghttpsscanninginantivirussoftware.Incasethereisnosuchoption,theonlywayoutistoturnoffsoftware. 11.UpgradetotheLatestOperatingSystem&ChromeBrowser IfyouareusinganolderversionofChromeoranoutdatedoperatingsystem,itisonlynormalthatyouarefacingthe“err_cert_common_name_invalid”error.UpdateyourwindoworanyotherOssandalsoyourChromebrowser. Wrap-Up Hopefully,thesestepswillhelpyougetridof“NET::ERR_CERT_COMMON_NAME_INVALID”error.Itisvitalthatyourwebsiteisupandrunning100%ofthetimetogainconsumers’trustandperhapsgeneratesalesifyouownabusinesswebsite. Evenifthereisawealthofinformationonyourwebsite,iftheyarenotaccessible,itisofnouse.Andmoreover,aproblematicwebsitecantintyourcompany’sreputationandreduceyourloyalfollowing. Incaseyoucan’tsolvetheissuebyyourself,youcanalwayscontactanISPornetworkadmin.Theywillsurelyhelpyoufixtheproblem. RelatedPost: ERR_SSL_PROTOCOL_ERROR SSLConnectionErrorOnAndroid TheServer’sSecurityCertificateIsRevoked PostedbyClickSSL ShareonFacebookShareonTwitter   WhatisInvalidTLS/SSLCertificateErrorandHowtoFixit? HowtoFixSSL_ERROR_RX_RECORD_TOO_LONGFirefoxError? TrySSLFinder SSLKB WhyClickSSL? SSLRenewals Million ofPeopleTrustonSSL WeAssuretoServe LeadingBrands ClickSSLisplatinumpartnerofleadingCAs&offeringbroadrangeofSSLcertificateproducts. ValuedPrice YouareatrightplacetogetcheapestSSLs;ourpricesareupto79%lowascomparedtoCAs. 100%RefundPolicy Ifyouarenotsatisfied,ourallSSLcertificatesarebackedby30-day100%moneybackguarantee. 24×7Support Ourexpertsarealwaysactivetohelpyou,soyouwillgetinstantsolutionsforyourqueries. 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