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How to extract MSI files from an EXE installer »
Problem: You need to extract an .msi file from an .exe installer. Solution: There are at least three ways of solving this problem, but none of them is universal. You might need to go through all of them to find the one that works for the EXE installer that you have. CodeTwo strongly advises against extracting (and using) MSI files from [...] (ID:503)
How to find the Message-ID of an email and use it to track messages in Exchange and Microsoft 365 »
Problem: You would like to find the Message-ID of an email and use this ID to track emails in Exchange Server and Microsoft 365 (Exchange Online). Solution: About Message-ID How to find the Message-ID of an email How to track emails in Exchange Server via Message-ID How to track emails in Microsoft 365 (Exchange Online) via Message-ID [...] (ID:496)
What is UPN (User Principal Name)? »
In Windows Active Directory, a User Principal Name (UPN) is the name of a system user in an email address format. A UPN (for example: [email protected]) consists of the user name (logon name), separator (the @ symbol), and domain name (UPN suffix). Important A UPN is not the same as an email address. Sometimes, a UPN can match a [...] (ID:448)
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How to set a password for a shared mailbox »
Problem: You want to learn how to set a password for a shared mailbox in Microsoft 365 (Office 365), for example, to add the mailbox as a standard user account (secondary account) in your email app. Solution: Important If you want to use CodeTwo signatures with a shared mailbox, note that in most cases you shouldn’t password-protect [...] (ID:1149)
Troubleshooting problems with shared mailboxes »
Problem: You experience problems when setting up a shared mailbox to work with CodeTwo Email Signatures 365. Solution: See the following sections to find out what to do if: A personal signature is not inserted for shared mailboxes, A signature is misplaced in replies or forwarded messages sent using a shared mailbox, or A shared mailbox [...] (ID:1146)
CodeTwo signatures vs. inline images in OWA and new Outlook for Windows »
Problem: In November 2025, Microsoft changed how inline (or embedded) images are represented in Outlook on the web (OWA) and the new Outlook for Windows. Inline images in the HTML email body are now represented by a content ID (cid) in the src attribute rather than a URL with an attachment ID (see this Mcrosoft article to learn [...] (ID:1144)
