<\/span>Solution 3: Use the Domain Name\/ Correct Mail Server<\/span><\/h3>\n\n\n\nIf Outlook isn't connected to the right domain name, you'll have trouble collecting diagnostic data. This will ultimately cause the Entitlement.Diagnostics Certificate error to appear.<\/p>\n\n\n\n
To change your domain name:<\/p>\n\n\n\n
Sign into your Microsoft Outlook account<\/li> Go to Setup from your account settings<\/li> Click on the Domains page<\/li> Select Add Domain<\/li> Follow the steps to confirm that you own a domain name<\/li> Head to the Users section<\/li> Click on Active Users<\/li> Select an email to change to the domain that you just added<\/li><\/ul>\n\n\n\n<\/span>Solution 4: Check Date and Time<\/span><\/h3>\n\n\n\nSometimes, incorrect date and time settings can cause the Outlook certificate error. If this is what you're dealing with, the Outlook client will have trouble connecting you to their servers.<\/p>\n\n\n\n
You may have meddled with your computer's date and time settings and forgotten to change them back. Fixing this service connection point issue is easy:<\/p>\n\n\n\n
Right click on the bottom right corner of the screen<\/li> Select Adjust Date\/Time<\/li> Wait for a window to open up<\/li> Select Date & Time<\/li> Check your phone and enter the correct time<\/li> Press Change<\/li><\/ul>\n\n\n\n <\/figure><\/div>\n\n\n\n<\/span>Solution 5: Change DNS Records<\/span><\/h3>\n\n\n\nFaulty DNS records can cause the autodiscover certificate error to appear. Here's the deal - the process to fix this differs depending on the registered domain that you're using.<\/p>\n\n\n\n
I use a Name Cheap registered domain, and it's pretty popular. Here's the process to follow if you use it:<\/p>\n\n\n\n
Visit the Name Cheap website<\/li> Sign into your account<\/li> Select Domain List<\/li> Click on the Manage button in front of your domain name<\/li> Go to the Advanced DNS tab<\/li> Click on the Add New Record button<\/li> Make the following changes to the Host Records and Mail Settings sections<\/li><\/ul>\n\n\n\n\n\nType <\/th>\n\n\n\n Host <\/th>\n\n\n\n Value<\/th>\n<\/tr>\n\n\n\n \nCNAME Record<\/td>\n\n\n\n autodiscover<\/td>\n\n\n\n autodiscover.outlook.com<\/td>\n<\/tr>\n\n\n\n \nCNAME Record<\/td>\n\n\n\n sip<\/td>\n\n\n\n sipdir.online.lync.com<\/td>\n<\/tr>\n\n\n\n \nCNAME Record<\/td>\n\n\n\n lyncdiscover<\/td>\n\n\n\n webdir.online.lync.com<\/td>\n<\/tr>\n\n\n\n \nCNAME Record<\/td>\n\n\n\n msoid<\/td>\n\n\n\n clientconfig.microsoftonline-p.net<\/td>\n<\/tr>\n\n\n\n \nCNAME Record<\/td>\n\n\n\n enterpriseregistration<\/td>\n\n\n\n enterpriseregistration.windows.net<\/td>\n<\/tr>\n\n\n\n \nCNAME Record<\/td>\n\n\n\n enterpriseenrollment<\/td>\n\n\n\n enterpriseenrollment-s.manage.microsoft.com<\/td>\n<\/tr>\n\n\n\n \nTXT Record<\/td>\n\n\n\n @<\/td>\n\n\n\n TXT Value generated for your domain in the Office 365 account*<\/em><\/td>\n<\/tr>\n\n\n\n\nTXT Record<\/td>\n\n\n\n @<\/td>\n\n\n\n v=spf1 include:spf.protection.outlook.com -all<\/td>\n<\/tr>\n<\/table>