Problem:
The connection between IIS and database is protected by a certificate. The IIS addresses here the last DNS name which is deposited in the certificate as alternative applicant. This can lead to problems.
Procedure:
Webaccess login setup
It is possible to influence the login process if necessary.
This can be done as follows:
1. open Web.config file with an editor (Notepad, ...)
2. adjust values in Web.config
1. check with passed certificate thumbprint
DoCheckServerCertificateChain:
True if the certificate comes from a valid certificate chain. Should always be set to true for security reasons. But can also be set to false if the check should not take place.
ServerCheckCertificateThumbPrint:
The ServerCheckCertificateThumbPrint can be found under:
Certificates >> OwnCertificates >> Certificates >>.
As you can see in the screenshot below you have to copy the value from the "Fingerprint" field and paste it into a text editor. Then remove the blanks here.
P.S. You may have to delete an invisible character at the beginning of this value.
The value looks then as follows: f41a5ec71c31f12d0b20f0264cd4b9b3a52dd001
2. check with passed DNS name
DoCheckServerCertificateChain:
True if the certificate comes from a valid certificate chain. Should always be set to true for security reasons. But can also be set to false if the check should not take place.
ServerCertificateName:
The ServerCertificateName can be found under:
Certificates >> OwnCertificates >> Certificates >>.
The LAST DNS name must be selected because only this DNS name is supported in the current MVC version.

3. restart IIS
If necessary restart the IIS in which the PWA is integrated to avoid possible conflicts.
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