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A special Rpc error occurred. Cannot import certificate. A certificate with the thumbprint already exists.

November 15, 2016 by Dan B. Lee 2 Comments

Notes This is an issue found in my working version of Exchange, which is Exchange 2013 CU 11. It may exist elsewhere, but this is all I've got to test with. Problem Using the Exchange Admin Center, you either tried to import a certificate or complete a certificate request. It may have done nothing on the first attempt, but it gave you this error on the second attempt. Description What you're seeing is that you have a cert that was successfully installed on the server the first time … [Read more...] about A special Rpc error occurred. Cannot import certificate. A certificate with the thumbprint already exists.

Filed Under: Exchange 2013, Uncategorized Tagged With: errors, Exchange

OpenVPN – Process started and then immediately exited. Socket bind failed on local address. Address already in use.

February 12, 2013 by Dan B. Lee 1 Comment

Overview I came across this issue not too long ago and wanted to share my findings. First, this issue is not just an OpenVPN issue. If a service is dependent on certain sockets and ports being open but they are in use or closed, the service is going to fail. The good news is that the issue is fairly easy to fix on a running server with a little detective work and a few easy commands. … [Read more...] about OpenVPN – Process started and then immediately exited. Socket bind failed on local address. Address already in use.

Filed Under: CentOS, Linux, OpenVPN Tagged With: centos, errors, linux, openvpn, tcp\udp

vCenter 4.1 has “check new notifications” task queued multiple times

February 11, 2013 by Dan B. Lee Leave a Comment

I was recently looking over an environment running VMware vCenter 4.1 and saw in the tasks that a task called "check new notifications" was queued about a dozen time or so. The schedule for the tasks varied. Some of the tasks were before the current time and others were afterwards. Either way, there were about a dozen or so of them and they needed to be dealt with. … [Read more...] about vCenter 4.1 has “check new notifications” task queued multiple times

Filed Under: Virtualization, VMware Tagged With: errors, tasks, vcenter, vCenter Update Manager, VUM

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Dan Lee

Dan B. Lee works at SyApps, LLC., a Managed Hosting Solutions Firm, as a Senior Network Engineer. Dan has a decade of IT experience and specializes in a number of different disciplines including Virtualization, Web Site Hosting and Design, Network Security, Data Center Architecture, Local and Remote Server Hosting, and Backup & DRS Solutions. Read More…

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