Customize your Outlook Web App Logon Page

As many of you are aware, Microsoft provides a default logon page for OWA, the Outlook Web App. Most companies, like myself want to be able to customize that page so that it suites your organization. Here is what my company OWA page looks like:

Customized OWA Logon Page

I have changed the color on the left to match my scheme, replaced the Outlook Logo with my company logo, and added a disclaimer to notify users. Below is the process to do that effectively for your organization.

NOTE: Every time you install an Exchange Cumulative Update (CU) or new version of Exchange Server these modified files will be replaced. Remember to backup your original and changed files to another folder so that you can replace them when you Update or Upgrade or if something goes wrong with the changes.

Customize the color of the Outlook on the web sign-in page

  • Use Notepad to open the file:


  • In the logon.css file, replace the default blue hexidecimal color value #0072c6 with the HTML RGB value that you want to use. You can use the following LINK to choose the color you wish to use.
  • When you’re finished, save and close the file.

Here are the different graphics that can be changed on the OWA logon page and their associated files:

Outlook on the Web sign-in page with element call-outs
ImageFile nameLocationDimensions (width x height in pixels)Bit depth

16 x 16 

128 x 108 

300 x 76 

Sign_in_arrow.png (for left-to-right languages) 
Sign_in_arrow_rtl.png (for right-to-left languages) 
22 x 22 
  • Just resize your images to the given dimensions in the table, rename them to the file name, and replace the files in the directory.

Change the disclaimer text for your OWA logon page

Next, we want to add a disclaimer to our logon page. To do that, we need to modify the logon.aspx document in the following directory:


Open the file in Notepad or your favorite HTML editor and search for the text ‘hidden-submit’. When you find the text, you can add your disclaimer text under the div class=”disclaimer” tag as I did in the following example:

Save your logon.aspx file and give your OWA server an IISRESET for good measure. You should be good to logon with the new page from that point on.


Customize the Outlook on the web sign-in, language selection, and error pages in Exchange Server
Customizing Exchange 2016 OWA

Installation of Exchange Server 2019 on Windows Server 2019

I have realized recently that I am an Exchange Messaging Professional, but yet, I have not posted the methodology of how I install an Exchange Server Mailbox Role. So here it is!

Install Windows Server 2019

Exchange Server 2019 requires Windows Server 2019 to run. For my environment, I haven’t necessarily need to follow all the enterprise level design aspects of database numbers to mailbox size ratios, number of servers, front/back end configurations, DAG Implementation, etc… If you want or need to delve into that realm, you can go here. I have need for a single server with only a few databases for a small number of mailboxes, so I am approaching it from that standpoint.

So first, in Hyper-V, I configured my VM with the following specifications:

Processors: 2 procs with 2 cores each – 4 Virtual Processors Total
RAM: 32GB with dynamic memory enabled optional
Drives: 2 .vhdx drives of 120GB each (OS / Exchange Data)
CD: Windows 2019 ISO
Default Settings for the rest of the VM Settings

Next I installed Windows Server 2019 Datacenter with the GUI! You can install it on Server Core if you wish. That information can be found in this link.

I ran through the setup of Windows and installed the OS on my first vhdx drive. I booted up, set the local admin password, and logged in. Once in Windows, I went to the Local Server Settings in Server Manager and configured the following settings:

Set the Date, Time, and Time Zone. (Once in the Domain, this would sync through Group Policy)
Set IE ESC to allow Administrators to have full IE access.
Set Remote Desktop Settings to gain RDP access. (This would be locked down with Group Policy as well once on the Domain)
Set the IP Settings to Static Settings. (DNS Servers, Gateway, WINS, etc…)
Join the server to the Active Directory Domain.
Reboot the VM Server.
Logon to your Domain.
Configure Windows Update Settings. (I have WSUS through Group Policy, this was configured automatically upon reboot)
Download and install all Windows Updates for the server. Then Reboot.
Open Disk Management and configure the secondary vhdx drive to be your Exchange Data Drive.
I configured the drive to be a mounted folder ‘C:\Exchange\Data’ rather than another drive letter as that seems to be the more accepted form of installation for the data drive these days. That is based on the multiple configurations that I have seen for Exchange through experience in Enterprise environments. Again, to each is own and depending on you design specifications, you might want to do that differently.

Next, we need to install the prerequisites for the Exchange Mailbox Server. I have always used to get the PowerShell script to install the prerequisites, but couldn’t find the article this time. Great site though! Instead, I got the information and ran the following from an elevated PowerShell Session locally on the server:

As part of the prerequisites you will need to install the following packages onto the server as well:

UCMA Runtime Install
Visual C++ Redistributable Packages for Visual Studio 2013

Once completed, you can begin the install of Exchange. If this is your first Exchange 2019 Server in your Organization, then you will need to run the following to update the Forest, Schema, and Domain so that Exchange will install properly:

NOTE: If you run into Prerequisite issues with the installation due to a “pending reboot”, check out my blog post for information on remediation of that issue.

Now that the environment is prepared for Exchange, you can actually begin the installation. I wanted to make my default database and logs folder to be on the Exchange Data volume that I created, so I included those settings in the setup command. Please look at the reference to the setup.exe switches for more information on that. Here is the command:

Setup should go through the installation via the PowerShell window and complete successfully. Reboot the Exchange Server, then you can then logon to the Exchange Admin Center and begin the process of configuration of how you need to integrate the Mailbox Server into your Server Farm. That configuration is for a later post.


UCMA Runtime Install
Visual C++ Redistributable Packages for Visual Studio 2013
Install Exchange Server 2019 on Windows Server 2019 Core
Exchange Server Design Planning
Use unattended mode in Exchange Setup
Practical365 on Exchange 2019

Exchange Hybrid Configuration Wizard Link

Wanted to do a quick post as I was working on my Hybrid Exchange Environment. I was unable to get the HCW to download and start from the Exchange Control Panel with the link provided on the page. This has happened to me for a while, so I went online and found a link that would work that could be downloaded and reused to open the HCW:

Hybrid Configuration Wizard Link



Exchange Setup Repeatedly Says ‘A Restart from a Previous Installation is Pending’

I have had this issue with EVERY upgrade that I have ever attempted for Exchange Server from 2013 through 2019 CU1. You go to run the setup program and during the prerequisite checks, setup stops. The error listed is:

A restart from a previous installation is pending. Please restart the system and rerun setup.

During the prerequisite checks, Exchange Setup looks in the registry at the following keys:

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\UpdateExeVolatile
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations

Nine times out of ten, a restart does NOT remediate this error. In order for setup to continue properly, you must do the following:

  • Open regedit: Start > Run > regedit.exe
  • Set the HKLM\SOFTWARE\Microsoft\Updates\UpdateExeVolatile key value to 0 or delete it if present. <– This one is usually NOT present.
  • Delete the HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations key.
  • Re-run Setup.

You should now be able to run setup and upgrade your Exchange Server.


A Restart From Another Installation Is Pending
Exchange Setup Fails – A Restart From Another Installation Is Pending
Microsoft Document – A Restart From Another Installation Is Pending