Error while signing in Sage 300c

By | October 28, 2021

Sage 300c web screens are available in every Sage Supported version with some additional features and changes in every higher version. Sage 300c is very helpful when you don’t have access to your Sage 300 system and you need to do some important tasks on Sage 300, you can access Sage 300c anywhere from browser.

New Stuff: Provision to Set Arrival Date for PO Purchase Details

In this blog we will see an error which appears while signing into Sage 300c and we will find out why exactly the issue appears and what are the possible ways to resolve the same.

When we enter our Sage 300c credentials and click on sign in, the following error pops up. Refer below screen shot for error description.

SignIn page

This error says that all the modules of Sage 300 is not activated and need to be activated, but this module which is shown in the error i.e., KN is not showing in Sage 300 data activation screen. But when saw in system information screen the KN module shows for previous version i.e., 2020 refer below screen shot.

System info

So now we know the problem why we are getting this error, and now to resolve this issue we need to add latest Notes module. We can do it either by modifying Sage 300 from control panel or we can reinstall Sage 300, but this time make sure that you include Notes module while installing or modifying the Sage 300.

After installing latest Notes module, we need to activate notes module from data activation screen. After installing/activating Notes module open system information screen where you can see KN(Notes) module with current Sage version i.e., 2021.

System info2

Once done with installing and activating latest KN(Notes) module now you can easily access Sage 300 web screens without any error.

About Us

Greytrix – a globally recognized and one of the oldest Sage Development Partner is a one-stop solution provider for Sage ERP and Sage CRM organizational needs. Being acknowledged and rewarded for multi-man years of experience, we bring complete end-to-end assistance for your technical consultations, product customizations, data migration, system integrations, third party add-on development and implementation competence.

Greytrix offers unique GUMU™ integrated solutions of  Sage 300 with Sage CRM, (listed on Salesforce Appexchange), Dynamics 365 CRM and Magento eCommerce along with Sage 300 Migration from Sage 50 US, Sage 50 CA, Sage PRO, QuickBooks, Sage Business Vision and Sage Business Works. We also offer best-in-class Sage 300 customization and development services and integration services for applications such as POS | WMS | Payroll | Shipping System | Business Intelligence | eCommerce for Sage 300 ERP and for Sage 300c development services we offer, upgrades of older codes and screens to new web screens, latest integrations using sData and web services  to Sage business partners, end users and Sage PSG worldwide.

Greytrix offers 20+ addons for Sage 300 to enhance productivity such as GreyMatrixDocument AttachmentDocument NumberingAuto-Bank ReconciliationPurchase Approval SystemThree way PO matchingBill of Lading and VAT for Middle East. The GUMU™ integration for Dynamics 365 CRM – Sage ERP is listed on Microsoft Appsource with easy implementation package.

The GUMU™ Cloud framework by Greytrix forms the backbone of cloud integrations that are managed in real-time for processing and execution of application programs at the click of a button.

For more details on Sage 300 and Sage 300c Services, please contact us at, We will like to hear from you.