If Sage 50 Accounts doesn't recognise your subscription, or you want to enter a new one, you can reset it.

NOTE: If you're in Ireland, ensure your Windows regional settings are English (Ireland) and your location is Ireland. Follow our article to check or edit your computer's regional settings.

Before you start

Try updating your licence information in the software:

1. Go to Tools then select Activation.
2. Select Upgrade Program then click OK.
3. Enter your Serial Number and Activation Key.
4. The Account Number field will appear, enter this, then click OK.

Reset the subscription key

TIP: Before you start, make sure you have your new licence information. Need to find it? Use our Find your Sage serial number, activation key and account number article.

1. Close Sage 50 Accounts.
2. Hold down the Windows Key, then press E to open File Explorer.
3. In the address bar, type C:\ProgramData\Sage\ then press Enter.
4. Right-click SDK Licence, select Rename then rename the folder to SDK Licence OLD.

TIP: If you can't see the folder, select the View tab, and then hover over Show and select Hidden Items. 

5. In the address bar type the following relevant path:
   

   Sage Accounts v31	C:\ProgramData\Sage\Accounts\2025
   Sage Accounts v30	C:\ProgramData\Sage\Accounts\2024
   Sage Accounts v29	C:\ProgramData\Sage\Accounts\2023
   Sage Accounts v28	C:\ProgramData\Sage\Accounts\2022
   Sage Accounts v27	C:\ProgramData\Sage\Accounts\2021
   Sage Accounts v26	C:\ProgramData\Sage\Accounts\2020

6. Delete the sage.usr file.
    TIP: This is held in C:\ProgramData\Sage\Accounts\XXXX. Replace XXXX with the relevant year, as per the table in step 5. 
7. Click the button below to download the registry fix:
   Download the registry fix
8. If prompted to save the file, note the file name, then click Save.
9. Browse to and double-click the downloaded file.
10. Click Yes, click Yes, then click OK.
11. Open Sage 50 Accounts and when prompted, enter your Serial number, Activation key and Account number.