Error 0x800705b4 when launching MSFS2024

User Support Hub Crashes (CTDs)
,
1

Using the template below will greatly help the team reproduce the issue and ease the process of fixing it. Before posting, search for an existing report. If you are not sure it’s a bug, please first report in User Support Hub.

3 tags are required - add them in the tag section next to the title above:

Feel free to delete this quote section after adding your appropriate tags.

ISSUE DESCRIPTION

Description of the issue: When I close down MSFS2024, and a few minutes later I want to start MSFS2024 again, I get error 0x800705b4 that the game is already running.
I checked my taskmanager, and it is not running. Usually I start it again and on the third attempt the message is gone and MSFS2024 starts as normal

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
Every time when I load the Sim.

I have tried with empty community folder, but the problem persists.
Running SU7

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Start the sim

  2. Close the sim

  3. Start the sim again after a few minutes.

[PC ONLY] FAULT BUCKET ID

If you experienced a crash on PC, sharing your Fault Bucket ID would be extremely helpful. You can learn how to find that ID here: How to find your Fault Bucket ID after a crash [PC]

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.

What peripherals are you using, if relevant:

[PC Only] Are you using Developer Mode or have you made any changes to it? No

[PC, MSFS 2020 Only] Are you using DX11 or DX12? DX12

[PC Only] What GPU (Graphics Card) do you use? RTX4060TI

[PC Only] What other relevant PC specs can you share?

MEDIA

Screenshot 2026-11-03 220820
Screenshot 2026-11-03 2208201094×871 233 KB

Please add a screenshot or video of the issue occurring.

2

Thank you for this report. We’ve moved your topic into the User Support Hub.

The Bug Reporting Hub is for posting suspected or confirmed bugs that other users are able to reproduce without duplicating an existing bug report.
If you are not sure if your issue is a bug or need further input from the community to reproduce the issue, please use the User Support Hub category.

If the community can replicate your issue, first search the Bug category to see if there’s an existing topic. If it already exists, contribute to that report. Duplicate bug reports will be closed, multiple issues must be submitted individually.

If you believe it is a new report and no duplicate exists,create a new bug topic using the provided topic template, and/or include all the requested information about your bug and sim setup
This is required in order to provide valuable information, feedback, and replication steps to our test team.

All issues caused by or involving third-party addons/mods should be reported to the third-party developer. Assure that no addons/mods are used when reporting issues in Bug Reports.

3

Windows error code 0x800705b4 means a time-out occurred because a system component, update service, or driver sstopped responding during an update.

I would look at your drivers first, I had this issue I believe previsoulsy, I reinstalled the sim and worked fine again

4

I just rebooted my machine and it worked fine afterwards.

5

Had similar behavior until I noticed MDDirect (part of the MadDog airliner install) in my system tray. Disabled it & the problem went away.

For what it’s worth …