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.
Cause
Resolution
Before you start
Try updating your licence information in the software:
Go to Tools then select Activation.
Select Upgrade Program then press OK.
Enter your Serial Number and Activation Key.
The Account Number field will appear, enter this, then select 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
Close Sage 50 Accounts.
Hold down the Windows Key, then press E to open File Explorer.
In the address bar, type C:\ProgramData\Sage\ then press Enter.
Right-click SDK Licence, select Rename then rename the folder to SDK Licence OLD.
TIP:
If you can't see the folder, select View, then Show and select Hidden items.
In the address bar type the following relevant path:
Sage Accounts v33 or above
C:\ProgramData\Sage\Accounts\Vxx. Where xx is the year of your software. For example, V33.
Sage Accounts v32 or below
C:\ProgramData\Sage\Accounts\20xx
. Where xx is the year of your software. For example, v32 is 2026.
Delete the sage.usr file.
TIP:
This is held in C:\ProgramData\Sage\Accounts\XXXX. Replace XXXX with the relevant year or version, as per the table in step 5.
Manually edit the registry by pressing the Windows key and R, type Regedit and select OK.
Expand HKEY_CURRENT_USER, then SOFTWARE, then SAGE.
Select Line 50.
Double-click Account number on the main screen on the right, clear the Value data field, then press OK.
Open Sage 50 Accounts and when prompted, enter your Serial number, Activation key, and Account number.