Sage 300c License activation error while logging in

By | May 31, 2020

In this blog we will see how we can activate sage 300c 2020.1 web screen License and avoid error while opening sage 300c 2020.1 web screen. If we do not activate License for sage 300c web screen an error will pop up while opening sage 300c 2020.1 web screen. We will learn how we can get rid of this error and start sage 300c web screens.

New Stuff: Provision to specify Tax amount in GL Journal Entry Sage 300c v2020 Web screen

While opening sage 300c web screen we can face an error if web screens License is not activated for web screen. Please refer below screen shot.

To solve this error and to start sage 300c web screen we will need activate the license by entering activation key for web screen option in sage 300 License manager window. To access License manager window,

Open sage 300 desktop version >> Click on About option >> Licenses >> License manager

In the list find web screen option under license information and then enter activation key.

Once you activate the license, try to login sage 300c web screen. Now, sage 300c web screen will get opened without any error.

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Greytrix – a globally recognized and one of the oldest Sage Gold 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,, 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.

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