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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(156.8, 77%, 25%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Hello
I'm trying to login using POST, but I get an error.
「UnresolvableHostName. The specified host name'dev **. develop. *****. co.jp' could not be resolved.」
The URL is correct, but I get an error like this.
Is there a problem with the certificate?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(0, 98%, 10%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDM%3C/text%3E%3C/svg%3E)
@井形まどか ,
can you please inform us which exact version of the Edge browser you are using for making this test? Does this issue occur with the other browsers?
How exactly did you try to login? If possible please try to provide the detailed steps to reproduce the issue.
The information mentioned in the original post is not giving any idea about the cause of the issue.
I suggest you try to provide detailed information about the issue that may help us understand the issue in a better way.
Thanks for your understanding.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(89.60000000000001, 81%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ERA%3C/text%3E%3C/svg%3E)
Does it happen for one specific website or for all other websites?
How are you sending this message?
It seems like developer related issue and not an issue with Microsoft Edge.
Try update to the latest version of Microsoft Edge and check if problem persist.
If yes, check with the website owner.