Flexera Beacon Upgrade (19.x to 22.4) – ManageSoftDL and RL Application Error

September 1, 2026 at 5:08 AM

Hi Team,

We are using Flexera One and recently upgraded our Flexera Beacon from version 19.x to 22.4. As part of our upgrade roadmap, we are planning to upgrade the Beacon further to the latest available version.

However, after upgrading from version 19.x to 22.4, we encountered an issue while testing connectivity to the ManageSoftDL and ManageSoftRL virtual directories from the Beacon server. The test fails with the following error message:

"Server Error in '/ManageSoftDL' Application. Could not load file or assembly 'Newtonsoft.Json, Version=6.0.0.0'"

It is worth noting that the Parent Beacon connectivity test is successful, indicating that communication between the Beacon and its parent is working as expected. The issue appears to be specific to the ManageSoftDL/ManageSoftRL web applications.

Please find the attached screenshot for reference.

We would appreciate your guidance on the possible cause of this issue and the recommended steps to resolve it.

Regards,

Ravi Ladhawala

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ravikumar.ladhawala
16 hours ago
Hi @mag00_75 ,

Thanks for your response.. Following discussions with the Flexera Support team, their investigation revealed that the Newtonsoft.Json version referenced in the Web.config file was not updated as part of the Beacon upgrade. The team provided the required configuration changes, which were subsequently applied. As a result, access to the ManageSoftDL and ManageSoftRL application URLs was successfully restored.

Regards,
Ravi Ladhawala
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mag00_75
a day ago
Hi
I think support had a hotfix for that release, reach out to them with a ticket if you cant use a newer beacon version.
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- ravikumar.ladhawala
  16 hours ago
  Hi @mag00_75 ,
  
  Thanks for your response.. Following discussions with the Flexera Support team, their investigation revealed that the Newtonsoft.Json version referenced in the Web.config file was not updated as part of the Beacon upgrade. The team provided the required configuration changes, which were subsequently applied. As a result, access to the ManageSoftDL and ManageSoftRL application URLs was successfully restored.
  
  Regards,
  Ravi Ladhawala
  Expand Post
  Selected as Best

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