Hello, Thank you for posting in Q&A forum. Here're some steps you can try to troubleshoot this issue: 1.Press Win + R and run "control keymgr.dll" and press Enter. 2.Click on Windows Credentials under Generic Credentials, locate the entry for mail.hprs.local and click on the down arrow next to it. 3.Click on Remove to delete the cached credentials. Restart the computer and try logging in again. If it doesn't help, please try to run nslookup command to see if there's any DNS resolution issue. Best Regards, Hania Lian
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