This occurs because:

• Windows marks the service for deletion
• You have insufficient access on the computer you're installing on

  Check you're an administrator

1. Press the Windows key 

   

     and R on your keyboard.
2. Type netplwiz, then click OK.
   • If the User Accounts window appears, you're an administrator.
   • If prompted to enter your credentials, you're not an administrator.

To find out your administrator login details, speak to your IT support or someone appropriate within your business.

 Log in as an administrator

1. Restart the computer and log in as an administrator.
2. Try to install the software again.

If the problem persists, continue to the check the Sage Data Service section.

 Check the Sage Data Service

1. Press the Windows key 

    

   and press R.
2. Enter services.msc then click OK.
3. Scroll down the list until you locate Sage 50 Accounts Service vXX and note the exact name.
   • For example, Sage 50 Accounts Service v27.
4. Close the Services window.
5. Press the Windows key 

    

   and press R.
6. Type cmd then click OK.
7. Type sc delete [service name you noted] then press Enter.
8. Type Exit then press Enter.
9. Restart the computer and log in as an administrator.
10. Try to install the software again.

Disable 'Use FIPS-compliant algorithms for encryption'

1. Press the Windows key + R.
2. In the Run window, enter secpol.msc then click OK.
   
   The Local Security Policy windows appears.
   
   
3. Expand Local Policies and click Security Options.
4. Scroll down and double-click System cryptography: Use FIPS-compliant algorithms for encryption, hashing, and signing.
   
   
   
   
5. Select Disabled then click OK and close the Local Security Policy window.