First, check if ETS2 process is running. If so, end it and try again. If this doesn't help delete core_ets2mp.dll (Path: C:\ProgramData\TruckersMP) , re-open launcher and re-download file.
Please try doing a fresh reinstall of TruckersMP as a whole:
Press the Windows Key + R (Win+R) on your keyboard
Enter "%programdata%" and press Enter (without the quotes)
Find the folder "TruckersMP" and delete that folder.
Navigate to C:\Program Files\ and delete the folder named "TruckersMP Launcher"
Go to our website and re-download and install the Launcher with admin privileges https://truckersmp.com/download/
Open The Launcher with admin privileges and click "Install Available Updates"
First,check the task manager, make sure that ETS2 is not running. Delete the TruckersMP-related files on your computer (delete the "TruckersMP" folders in C: \ ProgramFiles and C: \ ProgramData)Remove "TruckersMP Launcher" from the control panel and follow the installation guide.
Hai @YuriyChernopolsky. Please read this topic, it may help you.
Try running TruckersMP as an adminstrator
Right click on TruckersMP
Click run as an adminstrator.
Try restarting your router.r (WiFi)
Hello there, some good answers were given above, has your problem been solved?
I await your return!
This topic has been inactive for more than three days, due to inactivity, I will move this topic to the inactive topics section.
Feel free to send me a message (in the forum) if you want us to open this topic for new answers and help.
Also, please keep in mind that you can always contact our support team through the support system if you have something to ask: https://truckersmp.com/support
Thanks for your help and participation. Have a great day !
This topic has been inactive for 2 more days ,due to this i will have to move this topic to Unsolved Topics
If you still need any help,create a new topic or contact us directly by submitting a support ticket:https://www.truckersmp.com/support
//Locked and Moved to Unsolved