Recently a client running Accpac version 5.4 and Misys Manufacturing version 5.3 was restricted at 2 users even though they had a 3 user license. The error they got when a third user would try to login to MISys was “No more users allowed in MISys Manufacturing”.

I knew I had this same issue a few years before but I could not find my notes on the fix so I had to contact Misys Manufacturing Support. Keep in mind that this version is no longer supported so they really didn’t need to help me, but they did because their support team is awesome.

Typically the problem is caused by not exiting Misys properly. This can happen if the program or computer stops responding or if the power goes out on a computer that is logged into Misys.

Here is the fix:

1. Make sure all Users are out of MISys and ACCPAC.

2. Go to the server and stop and start the Database engine (that should free up any locked resources). If you aren’t sure what database engine you are using you probably have no business trying this in the first place but you can accomplish this same task by restarting the database server.

3. After you restart the DB Engine you need to find the “Site” folder in the AccPac installation folder and delete the file named MI53UNIT.ISM.

Now you should be able to use all of your licensed users again.

I hope this helps someone but just like I told my client, you really need to upgrade MiSys to a supported version.