Participant

Question

Adobe Acrobat DC : LogTransport2.exe using 50+% CPU continuously

Forum|Forum|5 years ago
May 19, 2020
6 replies
9477 views

This process is eating up my CPU : LogTransport Application (32bit), using 50+% constantly.

Adobe support made me reinstall acrobat DC, but no change. Adobe support does not know the process apparently and guided me to the forum.

Can somebody please tell what this process is doing, if it is necessary and if and how to disable it.

coalfield

Participant

+1 Same issue here, its bee going on for years and Adobe refuse to address it

V

Vinod Dobhal

Adobe Employee

Hi All,

We have released an update today to address some important issues that have been reported in the field. This release also fixes the issues reported in this forum post. Pls. update your installation of Acrobat / Reader DC to the latest version 20.009.20067 through help > check for updates to get the latest patch. Thanks for all your feedback.

Thanks & Regards,

Vinod

L

LogTransport Sufferer

Participating Frequently

To those who have done some digging, thank you for the added information. I will pass it along to the my IT staff. I will also watch if it happens more often with connected to VPN.

Vinod,

I have completed the option update you reference above and am on 20.012.20043 version with the issue returning. Let's keep the ball rolling to find a cure.....to the LogTransport issue.

V

Vinod Dobhal

Adobe Employee

LogTransport2.exe is used by multiple products of Adobe. Are you having an issue with Acrobat only? We had fixed it in the above build. If you are having the issue, you can provide us with the process dump or procmon log.

For other products, it would be better to log in the separate forums, so that the respective support teams can have a look at it.

Thanks,

Vinod

Sampsa Suomen Latu

Participant

I have the same problem too but not with Acrobat. If I open the file location for the process from taskmanager (Win10) it depends on the application i've used previously. Sometimes it is the LogTransport2.exe in Photoshop folder sometimes in Premiere, sometimes InDesing. So the problems is not with Acrobat per se but with Creative Cloud, probably again something stupid like failing autoupdate for the ********** Creative Cloud app itself. Tried to install it again by downloading the installer but that did nothing. Going to try uninstalling and reinstalling if that helps but i suspect i have to reinstall all the applications from scratch like last time something like this happend 😞

Sampsa Suomen Latu

Participant

Actually found out an interesting fact that the Adobe engineers might want to look at. The LogTransport2.exe process goes into a CPU hogging loop only if I have my VPN (OpenVPN based) connected.

When I tested with multiple CC programs without the VPN connected then the process appears after closing the application but doesn't consume a lot of CPU cycles and quits after maybe 1-2min. With VPN connected it goes hayware consuming a lot of CPU cycles and won't close automatically.

So I guess somehow the VPN interferes with the datamining of the logtransport process... 😉

ls_rbls

Community Expert

Hey,

This is really spot on observation!

I think that happens because of the LZO compression and decompression of the tunneling encryption mechanism.

I think that you can also test a few things out:

eliminate the use of IPv6 from automatic DHCP for both Internet and internal private network.

At the network adapter level, observe how the anti-virus, Windows defender, and the firewall and VPN rules interact with each other. Having a strict firewall at the router/VPN level and also a firewall in Windows at the operating system level can arise problems like this. One firewall (on Windows) allows communication out of your computer while the router blocks it, for example.
A good practice that usually works pretty well with stubborn programs that you should not uninstall is to loopback the application to use a 127.0.0.1 address.

And at the router level, maybe forwarding a dedicated port just for the LogTransport service would be possible to work around too
Last, yoi can also verify the behavior of the app when you switch to only accept UDP protocol instead of TCP/IP for the same port number (or socket) that LogTransport is already configured to use.

UDP is a connectionless protocol; it doesn't involve a three-way handshaking negotiation process between two computers in order to transmit data, nor keeping the connection alive, and in contrast to TCP/IP, it doesn't require to verify if the data was sent successfully between your the two nodes (your computer and whatever Adobe server is trying to communicate with, for example).

From the way you're describing the hogging of the CPU it almost gives the impression of a DDoS attack.

So maybe switching in your firewall to allow LogTransport to communicate with UDP only can be an actual successful approach that doesn't compromise the security you had before with your VPN.

V

Vinod Dobhal

Adobe Employee

Hi,

We are sorry for the inconvenience caused due to the issue. Could you pls. provide us with a process dump for the issue in order to investigate the root cause? You can take the dump of both LogTransport2.exe and Acrobat.exe. The detailed steps to create dumps are provided in the link: https://helpx.adobe.com/acrobat/kb/collect-logs-crash-freeze.html

Thanks,

Vinod

M

mwillis1

Participant

I am having the same problem. I have delete Reader (but still have Acrobat DC installed) and downloaded trhe latest update but cpntinue to have logtransporter consume ~20% of my CPU unless I manually end it.

ls_rbls

Community Expert

Share a dump file like Vinod suggested so that the engineering team take a look at this.

M

MarcoB2Author

Participant

Thanks for the info.

I did a repair of acrobat DC (on my initiative), then a remove and a reinstall (guided by support), and that didn't change anything.

I have now deleted the adobe acrobat reader product from my machine (release from early may 2020) and the issue is solved.

Conclusion : last release of adobe acrobat reader introduced the bug.

ls_rbls

Community Expert

Ok great! That is good info and thanks for sharing.

Don't forget to mark your solution as correct answer.

ls_rbls

Community Expert

Hi,

First off, the tech support rep should've recommend you to update to the optional update that was released for May 2020.

Sometimes issues like this are already addressed in a more recent update.

Second, a software resintallation should be performed IF repairing the installation failed.

Always try updating first. If updating didn't resolve the issue then try repairing the installation so you don't loose your preferences and other settings. If that fails then uninstall and reinstall.

And since you've been already using the software for a while, there are user preferences and other applications in that computer that are also interacting with Acrobat, including the operating system.

LogTransport is not a system process from what I read, and it can be removed or even disabled via registry (if you're using MS Windows). If you're using macOS it should (just saying it should) be the same via Plist.

It is my very personal opinion that you can disable it safely or even remove it, but you have to dig more and discover what other services and programs are interacting with LogTransport.

The issue may not be exclusively related to that process alone. And messing around with deleteing, removeing or disabling should be performed if you really know what you're doing. Even if you know what to do, these type of processes and programs are there for a reason. Caution and research should be taken into consideration.

That is why you should try first to update and see if the problem disappears when the new update is applied.

Last, since the tech support rep suggested to uninstall and reinstall, he/she should've guided you on how to use the Acrobat Cleanup and Repair Tool to remove old traces of the program and prepare your system to accept a fresh installation of Adobe Acrobat Pro DC.

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