Access via Remote Desktop Manager on Mac/Linux
To access your remote system, you need the “Remote Desktop Manager” application. Download it if you are using a Mac or Linux device.
The following example shows the installation on a Mac.
Version 2025.3.10.2 works without additional settings. Download Remote Desktop Manager 2025.3.10.2 for Mac
From version 2026.3.12.0, you need to change the SSPI module before connecting. How to change the SSPI module
1. Install Remote Desktop Manager
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Open the official download page of Remote Desktop Manager.
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Scroll down slightly until the download option is displayed. Click on Download and wait until the download is complete.

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Navigate to the “Downloads folder”.
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Double-click the file “Devolutions.RemoteDesktopManager.Mac.xxx.dmg”.

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Drag the Remote Desktop Manager into the Applications folder and follow the installation instructions to install the software on your device.
2. Download installation files
When starting the oneclick™ connection, an "RDM file" is automatically downloaded. You will find this file in the "Downloads folder" by default. If the download does not start automatically, click on the Download link in the access window. 
3. Open RDM file
Only open the .rdm file when you set up the connection for the first time or when the connection settings in oneclick™ have changed. Each time you open the file, Remote Desktop Manager adds a new entry, even if an entry with the same name already exists.
Otherwise, start your saved connection directly in Remote Desktop Manager, see Establish connection.
Before you open a new .rdm file, delete the old entry of this connection: right-click the entry in the left sidebar and select Delete. This way you won't accidentally start an outdated connection.
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Navigate to the "Downloads folder" and double-click the downloaded .rdm file.
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A new window will open. Select "Local data source" and click Select.

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In the window that opens, make sure that the "RDP connection" is selected. If it is not, select the connection manually and confirm by clicking OK.

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Only for version 2026.3.12.0 or later: Change the SSPI module before connecting:
- Select your connection in the left sidebar and click Properties.

- On the left, select RDP (Microsoft Remote Desktop).

- Click Authentication.

- Set SSPI module to System and click Save.

The setting is saved in the entry. If you open a new .rdm file later, repeat this step.
- Select your connection in the left sidebar and click Properties.
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Optional, if you use several connections: Give the entry a unique name so that you start the right connection later:
- Select the entry in the left sidebar and click Properties.
- Under General, enter a unique name in the Name field, for example "oneclick – Accounting", and click Save.
4. Establish connection
- In Remote Desktop Manager, you will see your saved connection under "Local Data Source" in the left sidebar.
The most recently created connection always appears at the bottom of the list. - Double-click the connection to start the session.
Alternatively, you can select the connection with a single click and then click Open Session.

5. Enter login credentials
- A login window will appear. The Username is already pre-filled. Copy the Password from the access window and enter it into the appropriate field. Leave the "Domain" field empty and click OK.

- Now you need to log in to the destination server with your credentials. Again, leave the "Domain" field empty.

- You are now securely connected and can close the browser window.

Note for macOS users
When using the Remote Desktop Manager on macOS, you may experience instability – especially when resizing the window during an active session.
To avoid connection issues, we recommend:
- Do not resize the window after the connection is established.
- Use Embedded instead of “Open Session” – this opens the session in the main window and provides better stability.

6. Were you successfully connected?
If you connected successfully, you can Check a box in the access window. This will ensure that the “Quick Access” tab is displayed instead of “Initial Setup” the next time you start.
Once the connection is established, you can close the access window.
Login failed?
If your login fails, this may be because your credentials have expired. They are only valid for 5 minutes.
In this case, you need to generate new one-time credentials and repeat the login process.
- Click on Renew connection time to generate new access credentials.

- Repeat the login from Step 5.
If login still fails, your antivirus software may be blocking the connection. Check the settings and contact your administrator if necessary.