Forum Post: CRM 2013 - Inconsistent javascript issue crash the web client and user needs to reopen

Hello, We are using CRM 2013 on premise version and almost 600 users are using it. We have some inconsistent JavaScript issue (following is the log for same) which happens to users in a day or two. When this issue occurs user can not work in system and they have to open new instance of CRM. Does anybody knows about this error? 1.0 Unable to get property 'location' of undefined or null reference 1 /_static/_common/scripts/main.js?ver=1676323357 /main.aspx#313155368 anonymous($p0,$p1,$p2){this.$3_3.get_currentIFrame()&&Mscrm.PerformanceTracing.write("Unload",this.$3_3.get_currentIFrame().src);this.$H_3=$p0.toString();this.$26_3();this.$1A_3();this.$1J_3();if($p0.get_isLocalServer())$p0.get_query()["pagemode"]="iframe anonymous($p0,$p1,$p2){this.$3_3.get_currentIFrame()&&Mscrm.PerformanceTracing.write("Unload",this.$3_3.get_currentIFrame().src);this.$H_3=$p0.toString();this.$26_3();this.$1A_3();this.$1J_3();if($p0.get_isLocalServer())$p0.get_query()["pagemode"]="iframe";addPassiveAuthParameters($p0);var$v_0=$p0.toString();if(IsNull($p2))$p2=false;var$v_1=this.$18_3($p0,$p2);if($v_1){if(this.$2z_3()){window.location.reload();return}this.$2d_3();this.$1s_3();Mscrm.PerformanceTracing.write("Navigate",$v_0);!Mscrm.Utilities.isIE()&&this.raiseEvent(Mscrm.ScriptEvents.UpdateTopLocation,null);this.$3_3.get_currentIFrame().contentWindow.location.replace($v_0)}else{this.$10_3();var$v_2=this.get_contentWindow().Sys.Application.findComponent("crmPageManager");if($v_2){!Mscrm.Utilities.isIE()&&$v_2.raiseEvent(Mscrm.ScriptEvents.UpdateTopLocation,null);var$v_3={};$v_3["sourceUri"]=Mscrm.Utilities.getContentUrl(null);$v_2.raiseEvent(Mscrm.ScriptEvents.IFrameReactivated,$v_3)}}window.self.InnerIFrameSrcChangeTimestamp=(newDate).getTime();this.title=$p1;if(window.LOCID_UI_DIR==="RTL"&&$p0.toString().indexOf("PersonalWall")>=0&&window.UseTabletExperience)this.$3_3.get_currentIFrame().style.position="RELATIVE"} Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; WOW64; Trident/6.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3) en-US en-US en-US 1366x768 Web 2015-04-20T15:41:12 1033 1033 1033 1033 {E8BBA7AE-A552-DE11-B475-001E0B4882E2} {614837CD-448B-DE11-A5E1-005056970D6C} 6.1.2.112