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[All About Switches] Q&A: What Should I Do If an Error Message Is Displayed When I Activate the License File on an S Series Switch?

Latest reply: Apr 26, 2018 15:25:27 1120 1 0 0 0

A: The error message displayed on the device varies depending on the cause of the license activation failure.

l  The message "Error: The filename is invalid, and the postfix of the file name must be 'dat'." is displayed.

This message indicates that the file name extension of the license file to be activated is incorrect. The license file name extension must be .dat. Activate a correct license file.

l  The message "Error: The specified file does not exist or is illegal." is displayed.

Ensure that the license file exists or a correct file name is entered.

l  The message "Info: License File expired." is displayed.

The license file has expired. Apply for or purchase a new license.

l  The message "Info: License file validation failed." is displayed.

The license file has failed the validation. Apply for or purchase a new license.

l  The message "No product features present in LK." is displayed.

The license file mismatches the product information. Apply for or purchase a new license.

l  The message "Info: License File with ESN or Version mismatch cannot be activated repetitively." is displayed.

The ESN has been activated before or version mismatch has occurred. Apply for or purchase a new license.

l  The message "Info: No product features present in license file." is displayed.

The control items in the license file only include quotation items for basic software. The license file is installed before delivery and does not need to be activated.

l  If the fault cannot be rectified, collect error information and contact technical support personnel.


For details, see the S Series Switches License Usage Guide.

Step 1: Log in to the enterprise technical support website at

Step 2: Click Switches.


Step 3: Click the name of the product to be queried, for example, S7700.


Step 4: Choose Installation & Upgrade > License Guide to find the License Usage Guide for your switch model.


Step 5: Open the License Usage Guide. Choose License Troubleshooting > License Fails to Be Activated in the navigation tree on the left, and follow the instructions.


S1720&S5700&S6720 Series Switches License Usage Guide|21782164|21782167|22318564|6691579

S7700&S9700 Series Switches License Usage Guide|21782164|21782186|22318632|6805481

S12700 Series Agile Switches License Usage Guide|21782164|21782186|22318571|20985028

S9300&S9300E&S9300X Series Switches License Usage Guide|21782164|21782186|22318596|16531





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MVE Created Apr 26, 2018 15:25:27

useful document, thanks
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