An older version of Sage 50 opens without error

Delete the .ini file for the current version

1. Open the Windows File Explorer.
2. Click View at the top and check the Hidden items box.
3. Go to C:\UserProfile\AppData\Local\Simply Accounting.
4. Delete the simplyxxx.ini file for the current version.
5. Verify you can now open Sage 50.

Remove special characters from company name

1. Uninstall and reinstall Sage 50.
2. If the system finds activation automatically, click the option to enter it manually instead.
3. When prompted, click Exit and don’t activate the software.
4. If Sage 50 opens without error, the issue is the file name.
5. Use a simplified company file name that contains no special characters. 

No versions of Sage 50 open or the above solutions didn't resolve the issue

Run malware scan

Contact your IT and have them run a malware tool.

Disable third-party application

1. Disable third-party utilities, antivirus, and firewall. 
2. Verify you can now open Sage 50.

Create a new user profile

1. Create a new Windows profile.
2. Verify you can now open Sage 50.

How to install Sage 50

The program doesn't open when opening a file or using the program icon