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How to check your tenant ID

Problem: You want to check your Microsoft 365 organization ID (Office 365 tenant ID), for example because you need to provide it to CodeTwo Customer Service. Solution: You can check your tenant ID in Azure Active Directory admin ce (ID:857)

How to move off-screen windows back to the desktop

Problem: In Microsoft Windows, it is possible that a window of an application opens off the main screen and you cannot see it or bring it back to your desktop. For example, you might experience that a window of the Signature template edi (ID:843)

Animated GIF support in email signatures

Problem: Can I use animated GIFs in email signatures created with CodeTwo software? Does it work on every email client? Solution: Animated GIF images are supported and can be added to HTML email signatures just like any other image (ID:813)

How to export an email message to the MSG and EML format

Problem: You would like to save an email as an .eml or .msg file. Solution: In this article you will find out about the most common email formats and learn how to export your messages. About email file formats How to save a (ID:800)

Error: The specified domain either does not exist or could not be contacted

Problem: You get the following error message when using CodeTwo software: The specified domain either does not exist or could not be contacted. Solution: This error is related to your environment and the way your system manage (ID:775)

How to make sure CodeTwo User Photos for Office 365 supports TLS 1.2

Problem: Starting 31 October 2018, Microsoft makes TLS 1.2 the default security protocol in Office 365. TLS 1.0 and 1.1 still work, but Microsoft does not provide support in case of connection or compatibility issues. This article exp (ID:761)

How to troubleshoot EWS connection by using EWSEditor

Problem: You get errors when you use CodeTwo software to connect to (or execute a specific action upon) a mailbox or public folder via the Exchange Web Services (EWS) protocol. Solution: To verify if an error is related to CodeTwo  (ID:749)

Problems related to Sender Policy Framework (SPF)

Problem: You experience problems related to Sender Policy Framework (SPF) TXT records configured for your domain. For example, your emails are treated as spam or junk by Exchange Online Protection (EOP). Solution: The correct co (ID:716)

Troubleshooting problems with installation of applications from outside the Windows Store

Problem: Windows 10 does not allow you to install CodeTwo software and displays a warning window (Fig. 1.) with the following error message: You can only install apps from the Windows Store. Limiting installations to apps from the  (ID:715)

Troubleshooting problems with emails and email signatures on mobile devices

Problem: You experience various problems with signatures and email layout when you send emails from mobile devices. For example, when you use a mobile device to reply to / forward a message that includes images and formatting, the layout (ID:683)

How to fix problems with emails encrypted by Azure RMS

Problem: You use Azure Rights Management (Azure RMS) to encrypt your email messages in Office 365. The recipients of these messages cannot access the encrypted content, and the following error is displayed: Sorry, we can't display (ID:671)

How to change behavior of UAC

Problem: User Account Control (UAC) is a Windows feature that helps you take control of your programs. When an application is trying to perform any task requiring administrator-level permissions, UAC prompts you for confirmation. By def (ID:582)

Mobile phone numbers are displayed improperly

Problem: The telephone numbers of contacts created in the desktop version of Outlook do not appear correctly on mobile devices, for example the + sign is missing. As a result, you cannot make calls to these contacts from your mobile  (ID:541)

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 f (ID:503)

How to find the Message-ID of an email and use it to track messages in Exchange and Office 365

Problem: You would like to find the Message-ID of an email and use this ID to track emails in Exchange Server and Office 365 (Exchange Online). Solution: About Message-ID How to find the Message-ID of an email How to track  (ID:496)

CodeTwo software and transaction logs

Problem: Does any CodeTwo software write anything to the Exchange transaction logs? Solution: Transaction logs in the Microsoft Exchange Server environment are files that store records of changes made to the Exchange Server databas (ID:489)

How to block users from running or installing software

Problem: You need to stop users from running particular applications, disable their ability to install new software, disallow executing scripts, etc. and you want to manage this at the operating system level. Solution: Use the Mic (ID:475)

Unsupported Builds

Problem: You cannot install CodeTwo software or are experiencing serious issues despite successful installation. Solution: CodeTwo software supports installation only in environments with official, commercially available Exchange (ID:469)

How to list Exchange servers and their roles

Problem: You need to list all your Exchange servers along with their installed roles or check the build version number of your Exchange Server. Solution: See this section for newer Exchange Servers, i.e. 2013 or newer, or mixed env (ID:449)

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: consists of the user name (logon name), separator (the @ symbol), and domain name  (ID:448)

How to uninstall a service

Problem: You are not able to uninstall a service from the software menu. Uninstalling the whole software from Add/remove programs and restarting a system also fails. There are three methods available to manually uninstall a service. (ID:436)

How to check your Outlook version

Problem: You would like to check your Outlook version, for example to know if you are using the 32-bit or 64-bit version. Solution: To find out if a workstation has been equipped with 32-bit or 64-bit Outlook and to see the full v (ID:430)

Outlook may not be installed with a newer version of Outlook

Problem: You are not able to install Outlook, and the following error occurs during the process: Microsoft Outlook [2010] may not be installed with a newer version of Outlook. If you continue, Microsoft Outlook [2010] will not be in (ID:422)

How to manage Exchange Attributes 1-15 in Office 365 via PowerShell

Problem: You are not able to manage Exchange Attributes 1-15 (custom attributes) in Office 365. Solution: You can use PowerShell to set the values of Exchange Attributes 1-15 in your Office 365 organization. Follow the steps below (ID:417)

How to kill a process

Problem: You cannot stop a process. Solution: Start Windows command line (cmd.exe). Type in and execute the following command where  is the name of the process or service you want to kill. You can find it in Task Manager or (ID:389)

Disable UAC

Problem: User Account Control is a Windows feature that helps you take control of your programs. When an application is trying to perform any task requiring administrator-level permission, UAC prompts you for confirmation. However, cer (ID:378)

How to embed images into emails in Outlook 2013/2016

Problem: You are not able to embed graphics in emails and email signatures created in Outlook: if you add inline images in Outlook 2013 or 2016, they are visible when you compose your message, but they are not displayed in the recipients (ID:364)

Import or export mailbox items via MFCMAPI

Problem: How to import or export mailbox items by using the MFCMAPI tool. Solutions: There are at least two ways of importing and exporting mailbox items: You can use your MS Outlook and Windows drag and drop feature:  (ID:361)

How to delete the contents of a user mailbox

Problem: You would like to delete the contents of a user's mailbox in Exchange Server or Exchange Online (Office 365). Solution: In Exchange Server 2019, 2016, 2013, 2010 or Exchange Online (Office 365), you can use PowerShell (ID:349)

Multiple unnecessary folders appear in Outlook folder tree

Problem: In your mailbox, you see many folders named the file so that changes to the file will be reflected in your item, and these files cannot be removed (Fig. 1.). Fig. 1. Multiple copies of the same unwanted folder. Solutio (ID:344)

Using CodeTwo software with Click-to-Run versions of Microsoft Outlook

Problem: You are not able to install CodeTwo software and you receive the following error message: Outlook not detected or No supported version of Microsoft Outlook detected. Install Microsoft Outlook and retry. even th (ID:330)

How to troubleshoot problems with iCloud - Outlook synchronization

Problem: You experience various problems with synchronization between Outlook and iCloud. Solution: The synchronization failures can happen in various scenarios. The most common issues are listed below. Problems after upgradi (ID:271)

Existing Outlook data file in a new mail profile

Problem: How to use your existing Outlook information (like emails, calendars, contacts, etc.) in a new mail profile. Solution: Oftentimes problems with Outlook are caused by a corrupt mail profile. In such cases the best solution  (ID:257)

CodeTwo Outlook Autoconfig and Yahoo accounts

Problem: You cannot autoconfig your Yahoo account in MS Outlook using CodeTwo Outlook Autoconfig. Solution: The CodeTwo Outlook Autoconfig free program helps to quickly configure your email account in Microsoft Outlook, Outlook Exp (ID:206)

How to uninstall a CodeTwo product if it is not possible from the Control Panel

Problem: You are not able to uninstall a CodeTwo product following the standard removal procedure. Solution: There may be multiple reasons to that, for example the installation files are corrupted, Windows registry is broken, etc. (ID:193)

How to use regular expressions

Problem: How to use regular expressions. Solution: Regular expressions are formulas that can be used to match or find character strings by employing wildcards and metasigns. In CodeTwo Exchange Rules family the regular expressions (ID:177)

Defining access rights to public categories in CodeTwo CatMan

Problem: How to define proper access rights for particular users. Solution: CodeTwo CatMan keeps the list of public categories in the file located in the local network. To define access rights to public categories for particular u (ID:134)

How to share files in windows via network share

Problem: Access files and folders located on another Windows computer, in the same local network. Solution: If you want to access files located on another machine, you will need to start sharing the files across the local network. (ID:118)

How to speed up an external HDD

Problem: Your external USB hard disk drive (HDD) works slowly. Solution: The default settings of your external HDD make it work slowly. To speed the HDD up, it is necessary to change its current settings to the Performance Mode.  (ID:108)

How to avoid getting the error dialog box: The item could not be saved because it has been changed

Problem: From time to time, when modifying an item in Personal Folders in Outlook, the following error appears: The item could not be saved because it has been changed by another user or in another window. Do you want to make a copy in  (ID:100)

How to configure a Send-Only account in Outlook

Problem: You want to create a Send-Only email account (from which mail is never downloaded) in Outlook. Solution: To exclude an email account from receiving emails in Outlook, you need to add this account as a new POP3 account in O (ID:81)

How to end a task in Windows Task Manager

Problem How to release access to the file blocked by some program when clicking the exit button is not effective Solution To immediately quit the blocking file application you can use the Windows Task Manager. You can open it (ID:74)

How to find hidden files and folders

Problem: How to find hidden files and folders. Solution: The below configuration enables displaying hidden files and folders in Windows. Open My Computer. From the top menu choose Tools, Folder Options. Fig. 1. Open se (ID:60)

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