"MID Server validation failed, please try rekey" while installing a new MID ServerDescription<!-- div.margin { padding: 10px 40px 40px 30px; } table.tocTable { border: 1px solid; border-color: #e0e0e0; background-color: #fff; } .title { color: #d1232b; font-weight: normal; font-size: 28px; } h1 { color: #d1232b; font-weight: normal; font-size: 21px; margin-bottom: 5px; border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: #cccccc; } h2 { color: #646464; font-weight: bold; font-size: 18px; } h3 { color: #000000; font-weight: bold; font-size: 16px; } h4 { color: #666666; font-weight: bold; font-size: 15px; } h5 { color: #000000; font-weight: bold; font-size: 13px; } h6 { color: #000000; font-weight: bold; font-size:14px; } ul, ol { margin-left: 0; list-style-position: outside; } --> Symptoms When installing a new MID Server you may notice the banner "MID Server Validation Failed, please try rekey" once you have finished. Cause There are many causes for MID Server validation issues. However, one of them could be when installing a new MID Server, you have copied the /keystore folder from an existing installation. Resolution If you encounter this issue and have tried to rekey your new MID Server, remove the /agent/keystore folder and restart the MID Server. Upon restarting, the /keystore folder will be recreated. You should then see the MID Server in an UP state and Not Validated. At this point, you can validate the MID Server.