To set the "Access denied" error resolution for the DAG shared witness server

When we set up the DAG share witness server, the following error occurs:
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Microsoft Exchange Warning
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The following warning appears when saving changes:

Set-databaseavailabilitygroup

is complete

Warning:

The specified witness server pek1-dcs-01 is not an Exchange server, or is not part of the Exchange Server security group.

Warning:

Insufficient permissions to access the witness server "pek1-dcs-01" Network file share. Before you correct this problem, the database Availability group may increase the vulnerability that caused the failure. Please retry the operation using Get database availability group. Error: Access denied.

Warning:

The command completed successfully, but no settings for "DAG01" were modified.
The reasons for this analysis are as follows:
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If the specified witness server is not an Exchange 2010 server, you must add the Universal Security group for the Exchange trusted subsystem to the local Administrators group on the witness before you create the DAG. These security permissions are required to ensure that Exchange can create and share directories on the witness server as needed.
Workaround:
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Add Exchange trusted subsystem to the Administrator group that is local to the witness server.

This article is from the "Clumsy birds have" blog, make sure to keep this source http://tingdongwang.blog.51cto.com/1056852/1661386

To set the "Access denied" error resolution for the DAG shared witness server