Encountered such a problem in doing NLB deployment , CRMAPP1 installed CRM version 6.1 has played SP1 patch, and CRM installation package on CRMAPP2 is 6.0 version, after selecting the connection existing deployment, the last step out of the detection of problem, as shown in FIG.
Look at this obviously is the wrong version low connection high version, go to MSDN subscribers on looking for SP1 installation package but the download was an error, which could not find full installation package SP1 available, see the Internet was said to change the registry negligible error Click Next to continue, but for a secret key that question, but I reported this nature is not the same database were good too, dare to try, who knows what the problem behind last contact with someone with the Microsoft support center, the answer is to change the registry, since Microsoft said feasible afraid of what, change, really smooth all the way, no problem.
Attach the registry modifications: find the registry key HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ MSCRM, right-click to create a new value named IgnoreChecks IDWORD32, and set the value to 1. Once again run the installation program, wrong or reported but the Next button is already bright, bold, right click Next. After installation open the upper right corner of CRM Click the gear icon in the browser view you will see CRM is about 6.0 and 6.1 DB.
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Reproduced in: https: //www.cnblogs.com/VicTang/p/4799538.html