2525757 - "Maximum number of SAP GUI sessions reached" or "Unable to create a new window" when using the WEBGUI Service

Symptom

Using a transaction in the WEBGUI, a "status bar" message or a "popup window" with the following information is displayed: "Maximum number of SAP GUI sessions reached" or "Unable to create a new window".

Environment

S/4HANA 1809 and LOWER

Product

SAP NetWeaver 2004 ; SAP NetWeaver 7.0 ; SAP NetWeaver 7.1 ; SAP NetWeaver 7.2 ; SAP NetWeaver 7.3 ; SAP NetWeaver 7.4 ; SAP NetWeaver 7.5 ; SAP S/4HANA 1610 ; SAP S/4HANA 1709 ; SAP S/4HANA 1809 ; SAP S/4HANA, on-premise edition 1511 ; SAP enhancement package 1 for SAP NetWeaver 7.0 ; SAP enhancement package 1 for SAP NetWeaver 7.3 ; SAP enhancement package 2 for SAP NetWeaver 7.0 ; SAP enhancement package 3 for SAP NetWeaver 7.0

Keywords

"Maximum number of SAP GUI sessions reached", "Message No. 14027" FBL3N, "Display G/L Account Line Items", RE80, VL10G, “Maximum number of GUI Sessions reached” , KBA , BC-FES-WGU , SAP GUI for HTML , BC-FES-ITS , SAP Internet Transaction Server , Problem

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