How to resolve a missing global qualifier error when opening an application or StudioIssue <!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #032D42; } a:visited { font-size: 12pt; color: #00718f; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Troubleshoot the error "_ undefined, maybe missing global qualifier" that occurs when editing a custom application or opening ServiceNow Studio. This error may appear on screen or in the localhost log. When opening an application in Studio, the Loading Application screen may display indefinitely without completing. Steps to reproduce Go to System Applications > Applications.Select the edit button on an application. The system tries to open the application in Studio, which keeps loading.Select the application name. The system tries to open the application form, and the error message displays on the screen. Localhost log example WARNING *** WARNING *** Evaluator: java.lang.SecurityException: _ undefined, maybe missing global qualifier Caused by error in Script Include: '_' at line 6 3: // (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors 4: // Underscore may be freely distributed under the MIT license. 5: ==> 6: (function() { 7: 8: // Baseline setup 9: // -------------- 2017-07-10 07:12:55 (695) API_INT-thread-1 58ABB5BEDBF332005D69F7671D9619D0 WARNING *** WARNING *** Evaluator: java.lang.SecurityException: _ undefined, maybe missing global qualifier Caused by error in sys_ws_operation.cfb3fd7237930200612747efbe41f15e at line 25 22: push = ArrayProto.push, 23: slice = ArrayProto.slice, 24: toString = ObjProto.toString, ==> 25: hasOwnProperty = ObjProto.hasOwnProperty; 26: 27: // All **ECMAScript 5** native function implementations that we hope to use 28: // are declared here. error "_ undefined, maybe missing global qualifier" is caused by script include with name "_". Release<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #032D42; } a:visited { font-size: 12pt; color: #00718f; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } All supported releases with ServiceNow Studio Cause<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #032D42; } a:visited { font-size: 12pt; color: #00718f; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } A custom script include with the name "_" conflicts with a base system script include that uses the same name. Resolution<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #032D42; } a:visited { font-size: 12pt; color: #00718f; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: ; max-width: ; width: ; height: ; } } Search for script includes with the name "_" by going to the following URL: https://<instance_name>.servicenow.com/sys_script_include_list.do?sysparm_query=GOTOname%3D_ This should return two rows: one for Studio and one for Code Search.Rename, delete, or deactivate any additional script includes with the name "_".Verify that the error no longer occurs.