Troubleshooting tip: FortiManager Upgrade with 'Fail(errno=-999):The string contains XSS vulnerability characters - prop[match]: string((AS#):1)'

[mpuente]

Description	This article describes how to fix the issue after upgrade with the error message 'Fail(errno=-999):The string contains XSS vulnerability characters - prop[match]: string((AS#):1)'.
Scope	FortiManager.
Solution	The following error message is displayed when the customer tries to upgrade the ADOM root from v6.0 to v7.0: Fail(errno=-999):The string contains XSS vulnerability characters - prop[match]: string((AS#):1) Follow this command to reset the ADOM root: execute reset adom-settings root 7 Validate again, issue is solved For more information, refer to this link: Technical Tip: How to reset ADOM settings in FortiManager/FortiAnalyzer