https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/737175#M1716 <P>suddenly cannot login，before this error login normally</P> Tue, 27 Apr 2021 06:45:05 GMT GritZhou 2021-04-27T06:45:05Z https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/736927#M1714 <P>request <A href="http://....SASCIStudio,error:http" target="_blank">http://....SASCIStudio,error: "http</A>&nbsp;status&nbsp;401-Unauthorized"</P><P>SASServer6_1 log:</P><P>org.xml.sax.SAXParseException;lineNumber:20;columnNumber 16;The entity "reg" was refrenced but not declared.</P> Mon, 26 Apr 2021 08:59:38 GMT https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/736927#M1714 GritZhou 2021-04-26T08:59:38Z https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/737133#M1715 <P>Hi <a href="https://communities.sas.com/t5/user/viewprofilepage/user-id/379488">@GritZhou</a>&nbsp;,</P> <P>Generally speaking this error message is caused by some upstream dependencies in the SAS Mid Tier services not starting correctly. The result is that when you try to access CI Studio you cannot login.&nbsp;</P> <P>&nbsp;</P> <P>The simplest way to resolve this is to restart all of the Mid Tier services. If that does not help, then contact SAS Technical Support for further assistance.</P> <P>Regards</P> <P>James</P> Mon, 26 Apr 2021 23:52:33 GMT https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/737133#M1715 JamesAnderson 2021-04-26T23:52:33Z https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/737175#M1716 <P>suddenly cannot login，before this error login normally</P> Tue, 27 Apr 2021 06:45:05 GMT https://communities.sas.com/t5/SAS-Customer-Intelligence/SASCIStudio-401-Unauthorized/m-p/737175#M1716 GritZhou 2021-04-27T06:45:05Z