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Errors with installation of 4.6b

After installing 4.6b, I started the MMC and the SAP R/3 server by right-clicking. The color of the icon changed to red. I checked the syslog viewer, and it showed the errors:

R/3 Basis System: Initialization DB-Connect Failed, Return Code 000256
R/3 Basis System: Operating system call connect failed (error no. 10061)
R/3 Basis System: Failed to establish a connection to the message server
Please advise.

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This could be due to several reasons.
Here are some things to check:
-services file (under %systemroot%system32driversetc) needs to have the sapdpxx and sapmsXXX entries
-the >sid<adm and SAPService>SID< Windows accounts need to have login permissions to the database server
-the system profiles need to be present and configured correctly (check under usrsap>SID<sysprofile)
-the R/3 kernel should be current
-the MMC needs to be registered correctly

This was first published in February 2005

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