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LICENSE: Linger time with Floating Licenses

Information in this knowledgebase article applies to:

  • Any Keil product, registered with a Floating License
  • endliclinger.exe: MDK-ARM V4.70 or newer, registered with a Floating License


My Keil Toolchain is registered with a Floating License and I'd like to know the following:

  1. If there is a linger time?
  2. What is its default value?


A lingering license stays checked out for a specified period of time beyond its checkin or application exit, whichever comes first.

  1. There is a linger time for Keil Floating Licenses, and for FlexLM.
  2. The default value, configured for the complete Keil toolchain, is 1 hour = 3600 sec.

Note, to free a MDK-ARM license as soon as possible:

  • µVision automatically reduces linger time to 60 sec after a project build or at closing a debugging session.
  • When calling the ARM Compiler from commandline (i.e. from a Batch- or a Makefile), the tool C:\Keil\ARM\BIN\endliclinger.exe allows to manually reduce the linger time to 60 sec. This tool does not require any parameters.



Last Reviewed: Wednesday, October 31, 2018

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