what is LM Compatibility

You might want to acquaint yourself with The Most Misunderstood Windows Setting of All Time. It’s the best written document on the relevant background for LMCompatibilityLevel. Review the NTLMv1 Known Problems and Workarounds for the most comprehensive resource available for the various problems associated with NTLMv1 being turned off.


Note that NTLMv1 use can result from misconfigurations in a great number of places. And those misconfigurations can happen anywhere in the “authentication chain”. Misconfigurations can happen on the client endpoint, on a member server that provides the service the endpoint connects to, or any domain controller leveraged by the two. Most misconfiguration comes down to one of two things: the Windows LMCompatibilityLevel or browser configuration.



If you are looking for the quickest way forward, we’d suggest using group policy to set a LMCompatibilityLevel=5 (“Send NTLMv2 response only. Refuse LM & NTLM.”) across all your computers. Doing this will likely unearth many misconfigurations in other places, and the other known problems & workarounds will come into play. Most of those will be the set of browser configurations needed.

Also read more : lmcompatibilitylevel

Comments

  1. Business Central ImplementationDecember 31, 2021 at 6:09 AM

    How long does it take to implement Dynamics 365 Business Central


    When estimating how long an implementation project will take, it is important to have a clear idea of the functionality required.

    For a small company, planning to only implement the finance modules, the process can take from 1 to 2 months.

    If yours is a medium-sized company and your project includes core financials, sales, purchasing, and inventory control, the implementation project could take 3 to 5 months.

    If the project is large and includes core financials, sales, purchasing, inventory control, and manufacturing then the entire Dynamics 365 Business Central Implementation project could take between 6 to 10 months.

    ReplyDelete

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