When you install Cumulative Update 2 for Microsoft Exchange Server 2013 on a computer on which drive D is available, a Hub folder that is located in the following path is created unexpectedly:
This issue occurs because the folder path is hardcoded incorrectly.
To resolve this issue, install the following update:
2936880 Cumulative Update 5 for Exchange Server 2013
To work around this issue, temporarily rename drive D before you install Cumulative Update 2.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For information about the Set-TransportServer Windows PowerShell cmdlet, go to the following Microsoft website:
General information about the Set-TransportServer cmdlet
For more information about Cumulative Update 2, click the following article number to view the article in the Microsoft Knowledge Base:
2859928 Description of Cumulative Update 2 for Exchange Server 2013