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Same here with 0x204
Microsoft Remote Desktop cannot connect to some servers after macOS update to Sequoia 15.0
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Piers Uso Walter
100
Reputation points
I just updated my Mac to macOS Sequoia 15.0. I'm using Microsoft Remote Desktop 10.9.10.
I can no longer connect to some of our old servers (I was connected to one of those servers right before the update, so the macOS update may be the cause of the problem). The systems I cannot connect to are two Windows Server 2008 R2 Enterprise systems and one Windows Server 2012 system.
The error message I receive in each case is:
We couldn't connect to the remote PC because the PC can't be found. Please provide the fully-qualified name or the IP address of the remote PC and then try again.
Error code: 0x104
I have no problem to connect to other servers (both older systems running Windows 2003, or other Windows Server 2012 systems, or newer systems running Windows Server 2016, or Windows Server 2022).
The error message suggests a DNS problem, but I have verified that the server names resolve correctly, I have flushed my DNS cache, and I have tried to use the IP addresses in the Microsoft Remote Desktop configuration. Still, I get the same error.
Is this a known issue with using Microsoft Remote Desktop on macOS Sequoia?
Windows for business | Windows Client for IT Pros | User experience | Remote desktop services and terminal services
9 answers
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Eric Cabestany 15 Reputation points2024-09-17T07:23:56.3433333+00:00 I have the same problem after updating to MacOS Sequoia 15.0
Now I'm trying the beta of Windows App.
I will let you know if works better than the Microsoft Remote Desktop App.
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Eric Cabestany 15 Reputation points
2024-09-17T07:25:37.96+00:00 I have the same problem using the beta of Windows App.
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Anonymous2024-09-17T02:01:26.56+00:00 Can confirm. The same seemingly happens to me. 0x104 right after upgrading a Mac to Sequoia.
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Anonymous
2024-09-17T01:55:04.4166667+00:00 Hello,
Since the release of Sequoia 15.0 is quite recent, no compatibility issues between the RD client and specific server versions have been reported on this forum yet.
Have you verified the network connectivity between your macOS system and the host server?
Have you made any recent configurations or updates on the problematic server side? Additionally, attempting to restart the problematic server might resolve any potential glitches.
Try connecting using a different RDP client: Get started with Windows App to connect to devices and apps - Windows App | Microsoft Learn or test with the Bata version App Center.
If the Answer is helpful, please click Accept Answer and upvote it.
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Piers Uso Walter 100 Reputation points
2024-09-17T10:00:05.7566667+00:00 Hi Karlie,
Yes, I have verified the network connectivity from my Mac to those servers.I was connected to these servers, then I updated my Mac which took about 45 minutes. Directly afterwards, I could no longer connect. So I doubt that it is something that happened on the servers. Also, the servers can be reached via RDP from other computers and nothing was changed on these servers in the 45 minutes that I wasn't connected.
Restarting the servers does not help, either.
I'll try the other apps you mentioned. -
Piers Uso Walter 100 Reputation points
2024-09-17T10:57:15.3066667+00:00 I tried this with Windows App Preview 11.0. This also does not work. Same error message:
We couldn't connect to the remote PC because the PC can't be found. Please provide the fully-qualified name or the IP address of the remote PC and then try again.Error code: 0x104
Configuring the IP address instead of the FQDN does not help.
So basically, Windows App Preview behaves just like Microsoft Remote Desktop App. -
Piers Uso Walter 100 Reputation points
2024-09-17T11:05:29.04+00:00 Windows App Preview 11.0 does not help - I have the same problems there with the same error message.
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