SWPM Prerequisites Checker : New Continuous Availability feature on Windows Server 2012/R2



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You are in the midst of installing (btw, it’s the prerequisites checker stage) the SAP system on Windows Server 2012/R2 environment. Unfortunately, below error message coming out,

New Continuous Availability feature on Windows Server 2012/R2 can result in long waiting times. Please apply Microsoft KB 2820470 http://support2.microsoft.com/kb/2820470. (Updated 2014-10-01)

Solution

Refer to these links for the solution,

SAP Note 1823833 – Accessing shares via SMB3.0 can result in long waiting times

MSDN Blog

KB2820470

Basically, the instructions are as below (please go through above links documents for better understanding)

1. Open the Registry Editor (regedit) and locate the following registry subkey:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\LanmanWorkStation\Parameters

2. Go to Edit menu, point to New and click DWORD Value. Type DisableCARetryOnInitialConnect.

3. Right click DisableCARetryOnInitialConnect and click Modify. In the Value data box, type 1 and click OK.

4. Exit the Registry Editor and restart your Windows operating system.

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