I got the same problem. Support reply on my report:
“At this time, I would like you to try the following steps:
Navigate to your Guild Wars 2 folder, which by default would be C:\Program Files(x86)\Guild Wars 2.
Move this folder to a new location like C:\Games\Guild Wars 2. The location doesn’t matter specifically, as long as it’s outside of Program Files and Program Files(x86).
Navigate to this new location and “Right-click” on “GW2.exe” selecting “Create Shortcut.”
Rename this shortcut to “Guild Wars 2 Admin Mode.”
“Right-click” on “Guild Wars 2 Admin Mode” and select “Properties.”
Click the “Compatibility” tab.
Checkmark “Run this program as an Administrator.”
Next, let’s go ahead and repair this new installation location:
With the Gw2.exe – Shortcut Properties menu still open, click on the “Shortcut” tab.
Edit the “Target” line to include -repair at the end. Note: Please make sure -repair is outside of the quotes, and be sure to include a space between the target location, and the new command line:
-- Correctly Formatted Example: “C:\Games\Guild Wars 2\GW2.exe” -repair
-- Incorrectly Formatted Example: “C:\Games\Guild Wars 2\GW2.exe -repair”
— Incorrectly Formatted Example: “C:\Games\Guild Wars 2\GW2.exe”-repair
Once completed, click “Ok” to save your changes. If you get an error trying to save, your target line may not have the correct format. Please try Step 2 again.
Right-click “Guild Wars 2 Repair” and select “Run as Administrator.”
Allow the repair to run and once completed, double click on “Guild Wars 2 Admin Mode” to launch the game.
Please do not hesitate to contact us should you have any additional issues, questions, or concerns."
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It help for me on 1 day, reset comp and again got dc everytime i leave pt