RE: UnauthorizedAccessException when using MSDTC

Hello Martin,

Regarding the issue, I suggest you may first check if this is a security
issue. For example, you may check if the Identity of the COM+ application
is a local administrator on the server. Also the MSDTC's account:

1. Click Start, click Run, type cmd, and then click OK.
2. At the command prompt, type control admintools, and then press ENTER.
3. Double-click Services.
4. In the Services pane, locate Distributed Transaction Coordinator.
5. In the Log On As column, note the account name.

You may also try a local administrator account here to see if it will help.

And, for further trouble shooting on this issue, you may consider check the
MSDTC log: %windir%\System32\Msdtc\Msdtc.log. It may provide some useful
information.

Also, you can compare the COM+ application and component settings on the
different server, to see if this cause the problem.
Sincerely,

Luke Zhang

Microsoft Online Community Support
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