After installing Sage 50 Accounts, an error can prevent the Control Service from starting, even after restarting your computer.

'Error 1920: Service Sage 50 Control Service failed to start'.

Disable antivirus when using Sage 50 Accounts v33.1

We’re investigating an issue where antivirus software prevents v33.1 from installing correctly. Some providers block the installation processes, but other antivirus tools can cause similar issues.

Known antivirus software linked to this issue includes:

• Webroot
• BrightCloud
• OpenText Cybersecurity

1. To continue, temporarily disable any antivirus software on the computer and run the installation again.
2. Re‑enable antivirus software after the installation completes.

Delete the Control Service folder

To resolve this issue, stop the Sage services and delete the Control Service folder.

If the issue persists, follow the steps in the Check the Windows System Information app section.

Check .NET settings

1. Stop your data services. Stop both the Sage 50 Accounts Service and Sage 50 Accounts Control, for your software version.
2. Browse to C:\Windows\Temp \.Net and delete any folders that refer to the Sage Control Service, for example: Sage.UK.Accounts50.Data.Service.Control_v29.

If the problem persists, continue to the next step.

Check that Microsoft .NET Framework 4.7.2 installed on your computer

1. Hold down the Windows key  and press R then type appwiz.cpl and press OK.
2. Select Turn Windows features on or off and select the Microsoft .NET Framework 4.XX checkbox, so it shows as  or  .
3. Check that Microsoft .NET Framework 4.7.2 or above installed on your computer. To do this:
4. Press the windows key + R,type control, then press OK.
5. Go to Programs and Features then select .
6. Enable Microsoft .NET Framework 4.7.2 or above.
7. If you haven't installed Microsoft .NET Framework 4.7.2 or above, you can download and install it from www.microsoft.com
8. If you have installed Microsoft .NET Framework 4.7.2 or above, you should install all appropriate Windows updates.
9. Reinstall the required service pack or update that prompted the message.

Try restarting the data service. If the problem persists, reinstall the Sage Accounts Data Service. 

Install latest .NET version

Download and install the latest version of Microsoft .NET.

Check the Windows System Information app

• In the Windows search bar enter system information, then click System Information

If this window populates, as shown in the image below - Then there’s no issue with the System Information App, so move onto the next section in this guide.

If the System Information window is blank or displays an error message, this indicates an issue. To resolve this:

1. In the Windows search bar, enter cmd then right-click Command Prompt and click Run as administrator.
2. Type net stop winmgmt, press Enter, if asked if you want to continue press Y, then press Enter.  
   
   ▼ Unable to stop winmgmt? 

   • Type winmgmt /resetrepository then press Enter

   This will report that the repository has been reset.

3. Type winmgmt /resetrepository then press Enter.

This will report that the repository has been reset.

4. Type net start winmgmt press Enter, then close the Command Prompt.

This can report that the WMI Service is has started, which is normal.

5. Open Sage 50 Accounts and log in to the company. If the issue persists, continue to Step 6.
6. Uninstall then reinstall Sage 50 Accounts. 

If the Windows System Information app is still blank, contact your IT administrator for further help. 

If the issue persists, contact Sage support.