How to resolve ERROR [System.UnauthorizedAccessException: Access to the path is denied.] after installing GUMU™ Extension

By | March 22, 2022

In this blog, we will discuss how to resolve ERROR [System.UnauthorizedAccessException: Access to the path ‘C:\inetpub\wwwroot\GUMU_Extension\Log\LOG_2022-02-06.txt’ is denied.]. This error occurs after the installation of the GUMU™ Extension package for additional webservices processing that arent provide by Sage and the users need those for data processing as per their business need.

GUMU Extensions - GetTableData
GUMU Extensions – GetTableData
How to resolve ERROR
GUMU Extensions – Path ERROR

Generally, the cause of the above error is insufficient user rights of the installed folder. Follow the below steps to fix the above error : –

  • Click on the start button & search for IIS(Internet Information Service (IIS) Manage) & Run as Administrator.
GUMU Extensions Webservice - IIS
GUMU Extensions Webservice – IIS
  • Expand web Server folder –> Sites –> Default web Site, Then right click on GUMU Extension & click on Edit Permissions. Refer to the screenshot above.
  • Click on Security & Select IIS User as well as the user you currently login then edit permission & Allow all rights, then click on apply then ok. See the screenshot below.
GUMU Extension - IIS Permission set
GUMU Extension – IIS Permission set
  • One’s all done restart the IIS.

Now you can Invoke the test again you can see it working correctly. Refer the screenshot below.

GUMU Extension - Success to get data
GUMU Extension – Success to get data

We hope you may find this blog resourceful and helpful. If you still have concerns and need more help, please get in touch with us at


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Greytrix – a globally recognized and one of the oldest Sage Development Partner and a Salesforce Product development partner offers a wide variety of integration products and services to the end users as well as to the Partners and Sage PSG across the globe. We offer Consultation, Configuration, Training and support services in out-of-the-box functionality as well as customizations to incorporate custom business rules and functionalities that require apex code incorporation into the Salesforce platform.

Greytrix has some unique solutions for Cloud CRM such as Salesforce Sage integration for Sage X3Sage 100 and Sage 300 (Sage Accpac). We also offer best-in-class Cloud CRM Salesforce customization and development services along with services such as Salesforce Data MigrationIntegrated App developmentCustom App development and Technical Support to business partners and end users.
Salesforce Cloud CRM integration offered by Greytrix works with Lightning web components and supports standard opportunity workflow. Greytrix GUMU™ integration for Sage ERP – Salesforce is a 5-star rated app listed on Salesforce AppExchange.

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 information on our Salesforce products and services, contact us at We will be glad to assist you.

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