Error 1: V2020.03 Xentry error "The data are faulty".
 

Solution:
Step 1. Please download the software here: 
https://share.weiyun.com/5uIxwgI
password: eswr9a
 

Step 2. follow the video to operate:

Step 3: Reboot the computer, then to run Xentry.

The above solution applies to:

V2020.03 Xentry in HDD

V2020.03 Xentry in SSD

Error 2: The user didn't do nothing but the software upgrade automatically, and Xentry doesn't work.
 

Solution:
Go to program files -> Mercedes-Benz->AddOn Center, rename "AddOnCenter.exe" as "AddOnCenter.ex_", restart the computer, then the Xentry will not upgrade automatically.

Source:http://www.obdexpress.co.uk/service/how-to-solve-xentry-error.html