Error: "File system 43 in [filename]" when opening a Remote Data Access Company

How to resolve the error message "File System Error 43" when trying to open a Remote Data Access (RDA) company in Sage 50 Accounting.

  NOTE: Due to the potential instability of Wi-Fi connections, Sage recommends using a hard-wired connection when accessing a Remote Data Access company. 

1. Rebase from a machine that can still open the company

1. Select Help, Support Utilities, and then select Rebase Remote Data Access Company.
2. Click Close on the successfully uploaded to Remote Data Access message.
3. Verify that the company opens without error on all computers. If not, proceed to Step 2.

2. Re-download the company

 NOTE: Only perform this on the computer that's receiving the error. If all users are receiving the error except for one, the one user who can access the company will need to perform a rebase. The other users will then need to re-download the RDA company. 

1. On the computer with the issue, close Sage 50 and browse to the data path. See How to find the Data Path for help with locating it.
2. Right-click the company directory in question, and then select Cut.
3. Right-click the desktop, and then select Paste.
4. Open Sage 50 and select File, Connect to a Shared Company.
5. Sign in with your Sage account email.
6. Select the company and follow the on-screen prompts to re-download the company.
7. Verify that the company opens without error.