An error occurred while installing the MSI at 'nisystemlink_message_brokeri.msi'.

[Adham_m]

I can't find words to thank u for this solution.But THANK YOU 🙂

[jyoung8711]

@maxbrown

Just as a heads up.  I ran into this issue AGAIN when updating an older version of system link to the most recent (2023 Q3).  I'm not 100% sure what version the upgrade was from (I think it was a SL 2021 Version).

I was attempting to do an "in-place" upgrade to retain some settings that I didn't want to lose... and when upgrading the Msg Broker package, I got similar errors.

After the first upgrade failed, I found I had to do the following to get the package to install successfully:

- Remove the registry folder for Erlang (HKLM\Software\Ericsson)

- Remove the service "NI SystemLink Message Bus"

- Force stop the process "epmd.exe"

    (I think this was a process left hanging in memory, since the directory that it came from was no longer there... (Program Files\National Instruments\Shared\Skyline\RabbitMQ)

- Delete the folder %programdata%\National Instruments\Skyline\RabbitMQ

It seems that it was pulling "old settings" from the RabbintMQ folder for the "new installation", and it couldn't clear that folder because it was locked by the epmd.exe... which took me a while to track down... the bolded step of shutting down that stranded process ended up being the key.

I'll be honest, it's pretty frustrating to still be encountering these types of errors. On SystemLink Installations... what should be a relatively fast 30 minute install turns into a 3 hour scavenger hunt to figure out "what didn't the installer clean up..."

[Andrey_Dmitriev]

Happened for me as well during update to 2023 Q3 from Q1:

Finally was able to install using the workarounds provided in this topic.

[tuz@mit.edu]

It worked for me! Thank you very much for the suggestion.

[JayNair01]

Hey i am getting the same error tried the command to delete "nisystemlink_message_brokeri.msi" but still getting the error. I am installing the 2023 version.

This is what my log looks like.

[jyoung8711]

I'm not totally sure what you mean about deleting the msi... 

A couple of suggestions... check the updated post a few above your response:
     https://forums.ni.com/t5/NI-Package-Manager-NIPM/An-error-occurred-while-installing-the-MSI-at-nisys...

Where I solved this recently for 2023.

Also, NI pushed out a patch, which supposedly resolved at least some of this, so make sure you're installing the latest version

[FARSHIDABDEHGAH]

hi everyone!

During the installation of Version 2023Q1, I received this problem. Is anyone here to help me solve it and also manage this issue?

[JohnnyNumberFive]

Thanks!!!

The official instructions from NI just didn't work.  This was perfect.  I now have Labview 2021 reinstalled.

[ycuisc]

Same here. This problem has been there for multiple years. Is the person behind this installer competent at all ? 

Waste 2 days already. Still not resolved. 

Tried everything. 

1. remove Ericsson registry key, it does not exist

2. remote RabbitMQ db, it does not exist

3. set OPENSSL environment flag, does not work

4. delete RabbitMQ folder, does not work

[RagMan]

Now the same error is happening again with NI PM 2025Q1.

Tried to install NI GWeb Software (full edition). But it gives the error with installing SystemLink Message Broker.

Then i uninstalled all NI software including NI PM, the downloaded an older version of GWeb software (2022Q3) which works well on another PC in my office.  But when I proceeded to install the 2022Q3, i was expecting it would install an older version of NI PM as well. Instead it installed the same 2025Q1 version that was giving problems. Now getting the error with installing SystemLink Message Broker.

"An error occurred while installing a package: NI-systemlink-message-broker. (21.5.1.49164-0+f12).

Curiously, even if I deselect all Addons suggested by NI PM when installing th eG Web Development software, it goes ahead and tries to install them anyway and then throw the error.!

Ridiculous waste of time getting anything installed with NI PM. I had issues wih NI PM 2024Q2, then it worked after I upgraded to NI PM 2024Q3, but the same types of errors are happening in NI PM 2025Q1.

I think I would like to go back to NI PM 2024Q3 (last version that worked) but seems like it is not possible to go back versions on NI PM>