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Remove OEMDRV Drive from Dell Server

I recently installed a Dell Server by using the Lifecycle Controller. This system uses a wizard to help with the installation of the operating system. In this case, I was installing Windows Server 2008 R2 to replace an existing Exchange 2010 server. As part of the installation, an OEMDRV USB drive is created by the Lifecycle Controller that contains the drivers used during OS installation. OS installation went well, but I ran into an issue afterwards. The OEMDRV drive was using E:, which I needed for my Exchange data. When you go into computer management, OEMDRV shows as a removable drive. However, you cannot change the drive letter or eject OEMDRV. By default the Lifecycle controller removes this drive after 18 hours, but I didn't want to wait that long. To force OEMDRV to be removed earlier, restart the server and press F10 to enter the Lifecycle Controller configuration. Then exit the Lifecycle Controller and reboot again. You don't need to make any changes in the configurat...
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OAuth Certificates with Hybrid Exchange

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Older versions of Microsoft Exchange in a hybrid configuration with Exchange Online (EXO) used a federation trust to authenticate connections for free/busy information. Newer hybrid deployments of Exchange 2016/2019 use OAuth authentication instead of federation. OAuth authentication is reliant on the Auth certificate in your on-premises Exchange. This certificate is created automatically with a lifetime of 5 years when you install Exchange Server on-premises. If this certificate has been replaced, then you also need to update Azure AD with the new certificate information. The simplest way to update the information is by running the hybrid wizard again after you update the Auth certificate. I wrote a previous post about renewing/updating the Exchange Server Auth certificate here: http://byronwright.blogspot.com/2018/05/expired-microsoft-exchange-server-auth.html If you update the Exchange Server Auth certificate and forget to update the information in Azure AD, you are likely to see fr...
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Preseeding Exchange 2010 Databases in DR Site

One of our clients uses a remote location as a disaster recovery (DR) site for Exchange. The purpose of the DR site is less about functionality (although, it is usable), it's more about the offsite backup functionality this provides. Last week, the Exchange server in the DR site failed and after rebuilding it, we needed to get it going again. The link speed to the remote location is only about 5 Mbps on which they can move about 50 GB of data per day. Given that they have 250GB of mail data, seeding over the network would have resulting in about 5 days of seeding if there were no network interruptions. The process for preseeding is clearly described in the Microsoft documentation and works as advertised: Clean up an incorrect data for the database such as database copies that no longer exist if you are in a recovery situation. Disable circular logging on the database. You are going to take a copy of the database and the log files generated between when you take a copy and when you ...
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