Probability score: 0.8  

Question improvement suggestion: Provide the exact version of Trados Studio you are using and any specific error codes if available.  

In the meantime, based on the information you have provided, here is a suggested answer to your question:  

Hello Kaori,  

Thank you for reaching out regarding the "Cannot connect to the host" error message you are experiencing with Trados. Here are some steps you can take to troubleshoot and potentially resolve the issue:  

**Step 1:** **Check Firewall Settings**  

Ensure that the firewall on the client PCs is not blocking the connection. You may need to open port 41000. For instructions on how to do this, refer to the Microsoft Windows Help on opening a port in Windows Firewall. If you are in a company environment, please contact your IT administrator to verify if the port is open.  

**Step 2:** **Verify Network Configuration**  

Since the issue arose after updating to Windows 11, check if the network settings on the client PCs are configured correctly. Ensure that the host computer's IP address is accessible from the client PCs. You can test this by pinging the host computer from the client PCs.  

**Step 3:** **Registry Settings**  

You may need to adjust the registry settings related to TLS. Follow these steps:  

1. Open the Registry Editor (you may need administrator rights).  

2. Navigate to `Computer\HKEY_LOCAL_MACHINE\SYSTEM\Current Control Set\Control\Security Providers\SCHANNEL\Protocols`.  

3. Check if "TLS 1.3" is present and delete it if it is.  

4. Restart the client PCs and try connecting again.  

**Step 4:** **Check SSL Settings**  

In Trados Studio, go to `File > Setup > Servers`. Double-click on the server you want to connect to and check if the option "The server requires a secure connection (SSL)" is selected based on your server's configuration.  

**Step 5:** **Reset Trados Group Share Connection**  

If the issue persists, you can reset the local Trados Group Share connection information:  

1. Close Trados Studio.  

2. Navigate to `C:\Users\%User Name%\App Data\Roaming\SDL\`.  

3. Rename the "Platform" folder to "Platform_OLD".  

4. Reopen Trados Studio and add the server connections again.  

If none of these steps resolve the issue, please provide the exact version of Trados Studio you are using, as well as any specific error codes you may encounter. This information will help in diagnosing the problem further.  

I hope this answer addressed your question. If not, please reject the answer, add the question improvement suggestion information, and click the RWS Community AI checkbox on the right to try again.  

RWS Community AI

Probability score: 0.8  

Question improvement suggestion: Provide the exact version of Trados Studio you are using and any specific error codes if available.  

In the meantime, based on the information you have provided, here is a suggested answer to your question:  

Hello Kaori,  

Thank you for reaching out regarding the "Cannot connect to the host" error message you are experiencing with Trados. Here are some steps you can take to troubleshoot and potentially resolve the issue:  

**Step 1:** **Check Firewall Settings**  

Ensure that the firewall on the client PCs is not blocking the connection. You may need to open port 41000. For instructions on how to do this, refer to the Microsoft Windows Help on opening a port in Windows Firewall. If you are in a company environment, please contact your IT administrator to verify if the port is open.  

**Step 2:** **Verify Network Configuration**  

Since the issue arose after updating to Windows 11, check if the network settings on the client PCs are configured correctly. Ensure that the host computer's IP address is accessible from the client PCs. You can test this by pinging the host computer from the client PCs.  

**Step 3:** **Registry Settings**  

You may need to adjust the registry settings related to TLS. Follow these steps:  

1. Open the Registry Editor (you may need administrator rights).  

2. Navigate to `Computer\HKEY_LOCAL_MACHINE\SYSTEM\Current Control Set\Control\Security Providers\SCHANNEL\Protocols`.  

3. Check if "TLS 1.3" is present and delete it if it is.  

4. Restart the client PCs and try connecting again.  

**Step 4:** **Check SSL Settings**  

In Trados Studio, go to `File > Setup > Servers`. Double-click on the server you want to connect to and check if the option "The server requires a secure connection (SSL)" is selected based on your server's configuration.  

**Step 5:** **Reset Trados Group Share Connection**  

If the issue persists, you can reset the local Trados Group Share connection information:  

1. Close Trados Studio.  

2. Navigate to `C:\Users\%User Name%\App Data\Roaming\SDL\`.  

3. Rename the "Platform" folder to "Platform_OLD".  

4. Reopen Trados Studio and add the server connections again.  

If none of these steps resolve the issue, please provide the exact version of Trados Studio you are using, as well as any specific error codes you may encounter. This information will help in diagnosing the problem further.  

I hope this answer addressed your question. If not, please reject the answer, add the question improvement suggestion information, and click the RWS Community AI checkbox on the right to try again.  

RWS Community AI