How to Fix ERR_CERT_COMMON_NAME_INVALID in Chrome

A brief guide to fix an SSL Common Name Mismatch Error: NET::ERR_CERT_COMMON_NAME_INVALID ... SSL error is also referred to as SSL connection ... SubmityourQuestionClose [contact-form-7id="26"title="SubmitQuestion"] DiscountCoupons|contactus|SSLWiki mobile_menu SSLBrands ComodoSSLCertificates cheapestprice:8.00viewAll AlphaSSLCertificates cheapestprice:$16.00viewAll RapidSSLCertificates cheapestprice:$16.00viewAll GeoTrustSSLCertificates cheapestprice:$40.00viewAll ThawteSSLCertificates cheapestprice:$32.00viewAll GlobalSignSSLCertificates cheapestprice:$100.00viewAll DigiCertSSLCertificates cheapestprice:$viewAll SymantecSSLCertificates cheapestprice:$220.00viewAll Wepromise30daysreplacementandrefundpolicy. 24/7Customersupportvialivechatandsupportticket. SHA-256signedencryptionsupportSSLcertificates. SameSSLcertificatesforlowprice-100%genuineproduct. 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SSLReseller MyAccount PositiveSSLCertificate $8.00 PerYearOnly WildcardSSLCertificate $34.00 PerYearOnly SAN-MultiDomainSSL $33.00 PerYearOnly EVSSLCertificate $61.60 PerYearOnly SSL2BUYChatSupport SSL/TLSSecurityErrors JasonParms 23June,2021 JasonParms AbriefguidetofixanSSLCommonNameMismatchError:NET::ERR_CERT_COMMON_NAME_INVALID SSLerrorisalsoreferredtoasSSLconnectionerror.TheSSLisinitialsforSecureSocketsLayer.Itisanerrorwhichmayappearwhenoneattemptstogetasecureconnectioninawebsiteserver.Usually,theSSLerrorisaresultofcrummyexecutionsofSSLCertificates. Thisresultsinthetextbeingdisplayedinthewhenloadingthewebsite. TheERR_CERT_COMMON_NAME_INVALID ERR_CERT_COMMON_NAME_INVALIDalsoknownasSSLCommonNameMismatchErrorisoneoftheSSLerrors.Itcanbeaconsequenceofmisconfigurationofcertificateinaserver.Itcanalsobecausedbyathird-partyextension.Itcanalsobecausedbysecurityprogramsinacomputeramongthembeingantivirusandfirewall.TheSSLcommonnamemismatcherrormayappearasbelowscreenshot. HowtoFixNET::ERR_CERT_COMMON_NAME_INVALID WhenfixingtheSSLerror,itisparamounttoidentifythecauseoftheerror.ByidentifyingthecauseofSSLcommonnamemismatcherror,thebelowtechniquescanbeusedtoresolvetheerror. Checkdateandtimearecorrect Ifthedateandtimearenotproperlysetonyourdesktop,thenyourbrowser(chrome)willshowERR_CERT_COMMON_NAME_INVALID.YoucanfixtheerrorbyadjustingtimeanddateonyourPC. Findoutproblematicextensions First,weneedtoturnonIncognitomodeinbrowserletssaychromebrowserandcheckiftheerrorpersistsornot.Iftheerrorissolvedthenthereisnoneedtolookforbadextensionsbutinanothercase,youshouldcheckonebyoneextension. Todoso,youneedtodisableallextensionswhichcanbefoundinClickthreedots>>MoreTools>>Extensions.Afterthat,triggersingleextensionandwatchiftheerrorgoesbybrowsingwebsite.Followthisprocessuntilyoufindaculpritextension.Onceyoufindsuchanextension,youshoulddeleteitfromabrowserandfixtheerror. Confirmthatthecorrectcertificateisinstalled AnSSLcommonnamemismatchmayoccurbetweenthedomainandthecertificateandthishappenswhenyouhaveinstalledthecorrectcertificate,butthecertificatedoesnotcoverthetypedwebaddressinthebrowser.Theremaybeadifferentcertificateinstalledonthedomainname.Thismismatchwillresultin“NET:ERR_CERT_COMMON_NAME_INVALID”thiscanbecheckedbyconfirming“issuedto”domaininformationtothedomaincertificate. Asthiserrorhappensduetoamismatchbetweenthedomainandthecertificate.,youneedtocheckthatthebrowsingdomainandsubdomainshouldbecoveredunderSANandwildcardcertificate.SANcertificatecountseachdomainseparatelyandwildcardcertificatecoverssingle-levelsubdomains.Soifyouarebrowsingdomainorsubdomainwhichisnotcoveredbyyourcertificate,thenitmayshowanerror. CheckforredirectsandNon-WWWvs.WWW ItisnotallSSLcertificatethatcoversbothnon-WWWvs.WWWaccountsofthewebsitebydefault.YoushouldstopredirectiontowwwtoNon-WWWorNon-wwwtoWWWdependuponthedomainyouenteredwhilepurchasingthecertificate.Itisthusvitaltoconfirmwhetherone’sbrowserisredirectingvisitorscompellinglytoanotherpartofthewebsite.Ifso,adjustmentsshouldbemadeonthesettingstoeliminatetheredirect. Forexample,ifyoupurchasedwildcardSSLandifthemaindomainlikedomain.comisredirectingtowww.subdomain.comthenitwillshowerrorinthebrowser.Inthiscase,theredirectisnecessaryit’sneedfultogetanotherSSLcertificatetocovertheredirectingoftraffictothedomainofchoicetheerror. Checkthesiteaddressisappropriate OnemaychangethesiteprotocoltoasecuredHTTPsfromunsecuredHTTPduetocuriosity.WhenonesaveschangesandthesitehasnoSSLcertificateeitherinstalledorbought,thesiteprotocolischanged,causing“NET:ERR_CERT_COMMON_NAME_INVALID.” IfonehasWordPress,itisrecommendednottoput“S”beforeHTTPifthecertificatehasnotbeenboughtorandinstalled.ItisappropriatetomovebacktoWordPressaccountgeneralsettingsandchecktheURL. ClearSSLState SSLcommonnamemismatcherrorcanberesolvedbyclearingifSSLcacheisthere.Thefollowingprocedurecanbeusedtocorrecttheerror.Opentheinternetpropertiesthengotothecontenttab,thenclearSSLcache,youclick,andtheerrorisresolved.Onthechromebrowsertheprocessisasfollows,gotosettings,thenshowadvancedsettings,afterthatontheChangeProxySettingsclickonthecleartheSSLstateandSSLcommonnamemismatcherroriscorrected. Checkproxysettings: IfyourproxysettingisnotsettoAutomaticallydetectsettings,youmayfaceerrorandaffectyourbrowsingexperience.Thiswillrestrictyoutosurfwebsitesonyourbrowser. Tosolveit,youneedtobrowseInternetpropertiesbyright-clickingontheNetworkAccessiconandgotointernetsettings. Here,youneedtotaponConnectionandclickonLANSettings. Then,youwillhaveaboxwhereyouneedtochecktheboxagainst“Automaticallydetectsettings”andpresstheOKbutton. Now,checkwhethertheerrorissolvedornot.Ifnot,youcantrythenextpointdescribedhere. OS&Browsershouldbeup-to-date Theoldoroutdatedbrowserandoperatingsystemfrequentlyshowsuchtypeoferrorandtooutcomefromthisissue,youcanupdatewindowsOSandupdateyourbrowser.Astherearenewpatchesfromdevelopersruleoutinavailableupdatesandthatmightbeacausepertainingtoshowsucherror.Incase,ifyouarewebsiteowner,youshouldhearotherusers,iftheyarefacingthesameerrorthenyoushouldupdateyourbrowserandOSalso. Self-signedcertificateanddifferentdomains ThistypeofeventhappenswhentheSSLcertificateisassignedtoadifferentdomainnameorself-signedcertificateisattachedtothatdomainname.Inthecaseofaself-signedcertificate,whichisusedforinternalserverpurpose,itwillreflecterrorasmostbrowsersdonottrusttheself-signedcertificateasalegitcertificate.Youneedtocontactthedevelopertoremoveself-signedSSLandinstallnewSSLonadomain.This,inturn,fixestheERR_CERT_COMMON_NAME_INVALIDproblem. CheckforAntivirus/Firewall ItmightbehappeningthatantivirusisblockingSSLconnection,besureitshouldnotbecheckmarkedwithdisablinghttpsscanninginantivirussoftware.Ifyoudonotfindsuchanoption,thenturnoffsoftware. Conclusion Websitesarethegatewaythroughwhichcustomersandtheworldatlargegetinformationaboutproductsoffered.Themostunfortunatethinginseekinginformationiswhentheverysought-afterinformationisnotaccessible.TheERR_CERT_COMMON_NAME_INVALIDisachallengethatcanberesolvedwithaclickofamouse.Thevariousstepsenumeratedaboveareveryhelpfulinkeepinginformationstreamingtotheintendedrecipientsandtheworldatlarge. RelatedArticles: HowtofixSSLConnectionErroronChrome? FixMixedContent(nonsecureitems)ErroronSSLSecureSite HowtoFixSSLConnectionErroronAndroidPhone HowtoFixERR_SSL_VERSION_OR_CIPHER_MISMATCHError QuickLinks FreeSSLTestingTools DownloadFreeSiteSeal SSLDiscountOffers LatestArticles HowtoFixErrorCodeSEC_ERROR_UNKNOWN_ISSUERinFirefox WhatisPublicKeyInfrastructure(PKI)? AuthenticationvsAuthorization–What’sthedifference? Timestamping–WhyDigitalSignaturesNeedTimestamps? WhatisaCertificateAuthority(CA)? 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