Hello, yesterday my sim worked fine but today it wont open is stuck on splash screen but when i move fslabs folder from add ons it worked fine. I tried to delete generated files also reinstall fslabs but nothing worked.

Welcome to AvSim. If you have the FS Labs Airbus as your startup scenario that could be the problem.

The easiest solution is to delete the Prepar3d.cfg file and then start P3D. A new one will be generated but you’ll need to set your preferences again.

Local Disk (C:) ► Users ► You ► AppData ► Roaming ► Lockheed Martin ► Prepar3D v4 - Prepar3D.cfg

Ensure you have a default aircraft as your startup scenario.

It didnt work i dont even get to menu screen its on splash screen.

10 minutes ago, HAJ2021 said:

It didnt work i dont even get to menu screen its on splash screen.

In that case uninstall and reinstall the Client element of P3D. Don’t deactivate your licence.

Dosent work either. Its strange because p3d will launch if Fslabs folder is out of Add ons folder 

5 minutes ago, HAJ2021 said:

Dosent work either. Its strange because p3d will launch if Fslabs folder is out of Add ons folder 

"Doesn't work either". What do you mean? Of course the uninstall will work.

Control Panel - Programs and Features. P3D Academic Client.

Then download the Client plus associated files from your LM account and reinstall.

Alternatively, uninstall FS Labs Airbus and then check P3D is okay then reinstall Airbus.

I reinstaled client and it will not open until i put fslabs folder ouside of add ons folder.

25 minutes ago, HAJ2021 said:

I reinstaled client and it will not open until i put fslabs folder ouside of add ons folder.

Uninstall FS Labs Airbus. Test. If okay then reinstall Airbus.

Ok i uninstalled Airbus and p3d opened.

Then i install it back and i had same issue.

12 minutes ago, HAJ2021 said:

Ok i uninstalled Airbus and p3d opened.

Then i install it back and i had same issue.

It's a FS Labs issue. You need to raise a ticket with them.

As I remember, FSL will show a dialog to choose some settings on first start. that didn't gives me problem though

But some other add-ons, like UGCX, also show some dialog on start up, will sometimes get the dialog hidden behind other window and not shown on taskbar. sometimes I do get locked here, unless I tried to find that window by minimize everything, or use "bring to front" with taskmanager on Prepar3D.

try if it's the problem.