Office 365 Autodiscover Lookup Process–Revisited
Previously we looked at the Office 2010 client and how it used Autodiscover to detect Exchange Online (EXO) mailbox settings. Outlook 2010 is no longer supported, so it is …
Change Certificate Friendly Name To Unique Value
Imagine that you have two certificates installed, but for whatever reason the same friendly name was used for both of them. You can certainly identity each of them by comparing …
IIS SMTP Virtual Server Component No Longer Supported
Please consider this a quick PSA (Public Service Announcement) as it is still common that I run into environments with the IIS SMTP service still running and processing mail.
While …
Sign-In Error 5000811 — Unable to verify token signature. The signing key Identifier Does Not Match Any Valid Registered Keys
The error message “Sorry, that didn’t work. Please go back to office.com and try again” is probably one of the most vague that I’ve seen. It’s up there with “please …
Why Is The Exchange Security Update Not Installed?
The issue of “Why is the Exchange Security Update not installed?” has popped up frequently over the last few months due to the number of security releases for on-premises Exchange.…
Does Manually Running Azure AD Connect Change Schedule?
Despite the current versions of Azure AD Connect running the main synchronisation task every 30 minutes, there are still times when we want to force the task. As a result …
AD FS Web Application Proxy Re-Establish Proxy Trust
In the Tailspintoys environment the AD FS Proxy was offline for month. It was unable to contact the AD FS server on the internal network, and this allowed the short …
Unable To Renew Exchange Certificate – Friendly Name Is Too Long
Your Exchange certificate is about to expire, so you initiate a standard process to renew it. It’s only a 5 minute job as that’s how long it took last time, …
Exchange 2016 CU22 and Exchange 2019 CU11 Setup Changes
With the release of this month’s Exchange updates, there are changes to not only the installation prerequisites but also the installation parameters.
These changes break down into two main areas. …
Exchange 2019 CU11 Released
Exchange 2019 CU11 has been released to the Microsoft Volume Licensing Center and the public Microsoft Download site! Exchange 2019 has a different servicing strategy than Exchange 2007/2010 and utilises …