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  • Sparhawk122
    21 posts


    Isn't that by default set to auto synchronize?

    Should not be an issue....

  • longjohn119
    494 posts
    This crash is also an issue in Siege.

    Fault bucket , type 0
    Event Name: AppHangB1
    Response: Not available
    Cab Id: 0

    Problem signature:
    P1: RainbowSix.exe
    P3: 5fcff309
    P4: 0000
    P5: 67246080

    Attached files:

    These files may be available here:

    Analysis symbol: 
    Rechecking for solution: 0
    Report Id: 5d80dd89-855e-46a2-b7e7-566ecaf9e149
    Report Status: 4
    Hashed bucket: 
    Cab Guid: 0

    The program RainbowSix.exe version stopped interacting with Windows and was closed. To see if more information about the problem is available, check the problem history in the Security and Maintenance control panel.
     Process ID: a30
     Start Time: 01d6e15b5a9d79e8
     Termination Time: 4294967295
     Application Path: E:\SteamLibrary\SteamApps\common\Tom Clancy's Rainbow Six Siege\RainbowSix.exe
     Report Id: 5d80dd89-855e-46a2-b7e7-566ecaf9e149
     Faulting package full name: 
     Faulting package-relative application ID: 
     Hang type: Top level window is idle

    Troubleshooting 101:

    What does Rainbow 6 Seige and AC Valhalla have in common?

    A broken Ubisoft Connect app

  • longjohn119
    494 posts

    I guess they have never heard of hotfixes?

    Typical lol. Even Indie developers roll out better support for very prominent issues like this.

    Name the number of Hotfixes in 2 years of AC Odyssey?

    Ubisoft doesn't do Hotfixes and if they were going to it would have been done already

    This won't get fixed until the week before the next Content Update ....

  • longjohn119
    494 posts

    Isn't that by default set to auto synchronize?

    Should not be an issue....

    My guess is they are likely running one of the apps/scripts that turns off the "Phone Home" stuff in Windows 10 and part of that is disconnecting from the Microsoft Time Server ...... I turn all my Phone Home stuff off manually in PC Settings, Services and what those don't touch either the Registry or if it's Win10 Pro I use the Group Policy Editor

  • BonzoSPB
    17 posts

    @pragmatist187 Just tried this and initial findings are positive. Not one crash.

  • BonzoSPB
    17 posts

    @bonzospb First crash after three decent length sessions using the process priority change. It's definitely more reliable but it's no solution.

  • Pragmatist187
    9 posts

    @bonzospb Yeah, you’re right. I sadly still have occasional crashes. My sessions have been longer but still not 100% stable, damn.

  • Sanuku
    3 posts


    Look up the Windows Eventviewer. It does usually give you a good direction what might be happening in your System and if it's related to some Hardware or an might be an driver issue.

  • Sparhawk122
    21 posts


    Ubisoft Connect. My guess.

  • Sanuku
    3 posts

    I would like to add the following:

    After someone hinted that this might be indeed an issue that the Game is causing with the latest Nvidia Driver (460.89) regular crashes i went back and installed instead the 457.30 Driver from early Nov. with the result that i am now InGame since freaking three hours without an single issue and the Game seem to be running like a freaking tank again even i have been Alt-Tabbing the [censored] out of it to see how the Game is performing or if i can force a Crash to the Desktop.

    I strongly would therefor advise that if you had an similar experience with the Game since the lastest Update to roll back (Download the 457.30 Driver and just install it over your current Driver (i did choose without the Geforce Experience this time to be sure nothing can cause those current issues i had since last year) and do an restart of your System so the older Driver does kick in.

    Preparting an Log File of my System Reports for Nvidia so they and Ubisoft can look into it, since i can go back and forth and each time i install the 460.89 again and load up Valhalla i can repeat the same Crashing Experience witht he current Driver.


    The current Nvidia Driver (460.89) from Mid Dec. caused my Assassin's Creed Valhalla (1.1) Installation to crash each 15-20. Minutes, installing the 457.30 from early Nov. (9th) and an reboot of the System fixed those issues.

  • BonzoSPB
    17 posts

    One of the factors I hadn't considered when trying to work out why AC Valhalla crashes is that I run a three monitor system.

    So, as a test, I disabled the two monitors that aren't used for AC Valhalla in the Windows Device Manager and I've enjoyed a crash-free Valhalla experience ever since.

    I've never experienced issues like this with a game before but it looks like there's an issue with multi-monitor setups. Is this Valhalla or Nvidia?

  • Guamat91
    5 posts


    the error is not indicated in the event viewer..i've had a crash just 5 minutes ago and no error or critical error is shown..in fact the system don't crash, it just return to desktop and ubi connect is closing

    I'll wait the next update and see if the situation will be better..

  • k4n3_93
    1 posts

    I have experienced 2 complete system restarts, several blue screens and innumerable crashes either with crash report or not or had to kill the process.
    I have tried many things: reinstalling NVIDIA drivers, also back to the oldest ones my system could accept for re-installing. I reinstalled the game itself, deleted contents of /cache folder, reinstalled ubisoft connect and turn it to offline as well as set the game process to high priority and synchronized windows clock.
    Some helped for a few hours or so, but it was then back to crashing again.

    What really fixed the issue (2nd day without single crash) was to clock back my RAM back to 3200 MHz CL16-18-18 from 3600 CL16-16-16. Funny stuff, I checked my RAM by running Memtest64 for 8 hours without a single error. Seems AC Valhalla is very susceptible to overclocking.
    My specs: R7 2700X@3950MHz, ASUS TUF RTX 3060 Ti@performance bios and 16 GB Crucial Ballistics AES, PSU Seasonic 550 W Focus Gold Plus.

  • BendelaBoombr
    42 posts


    debug mode on the nvidia panel,
    1 open panel
    2 click help
    3 below system information, check debug mode,

    good I played for hours without crashing but after restarting the game pc I give error again

    D3D12 Device Removed Extended Data

    Problem signature
    Problem Event Name: D3DDRED2
    GpuManufacturer: VEN_10DE
    DeviceRemovedReason: 0x887A0006
    DeviceExecutionState: 7
    AppName: ACValhalla.exe
    AppView: Unknown
    Operating system version: 10.0.19042.
    Location ID: 1046

    Additional information about the problem
    Memory Compartment ID: 6e5fe5bad6907a69791b6cab9e3547ba (1809159159668885434)

    honestly i don't know what to do anymore, i'm already with 30 hours of play there are days that i play for hours without problems there are days that hang every 5 minutes

  • t34416l31
    10 posts

    I experience crashes during cutscenes frequently

  • OverHaze
    3 posts

    Any improvement with today's Nvidia driver update?

  • michalinos1390
    14 posts

    Crash every few minutes nvlddmkm not responding on RTX 3080. Only Valhalla crashes.
    Trying to play offline helps but not solve the problem completely.
    Ubisoft any answers ?

  • cavveman
    75 posts

    The 30 series is rather new so it might be more of an issue with the driver rather than game. As an example my 2070 card works with no issues at al. And I have the driver 460.89 installed. And I the game running all day yesterday without crashes.

    Which driver do you have installed?

  • michalinos1390
    14 posts

    461.09 now and 460.89 before.
    There is no visible error. Just desktop crash. Event viewer shows "nvlddmkm not responding".
    My card is gigabyte rtx 3080 vision
    Lastest windows 10 pro with all updates
    850W Titanium PSU

    The problem is that valhalla crashing randomly sometimes 5 minutes and sometimes 2 hours.
    Trying playing offline helping a little.

    To be sure i testem the whole pc by benchmarks tests for hours.

    Prime 95, OCCT, Furmark, Memtest,
    I testet it again with to be sure that the whole pc is at full load in one time.
    So i run:
    Furmark (gpu torture test)
    Prime 95 (CPU /ram and ram controller test)
    99%gpu usage / 100% cpu usage/ 95% ram usage. Run for 1 hours without any problems.
    I try increase gpu core clock to be sure that is not a gpu problem.
    Msi after burner and +70 MHz and again furmark plus prime 95 (cpu, gpu, ram)
    24 hours test passed without any problems.

    Trying valhalla after that- 10 minutes and crash.
    Its not possible that the issues are hardware problems.
    Valhalla is not hardware heavy.
    In game 61 degrees on gpu and 55 on cpu.
    In game gpu core stay at 1980 MHz.
    In gpu torture test with oc gpu stay at 2030 without any problems with higher temp then valhalla - 68 degrees.

    I dont know what is wrong with with this game.
    This game made me sick.

    I loose a week to find why this game crashes with nvlddmkm.
    I tried every fixes 4 different drivers and nothing works.
    Maby its a denuvo or something.

    Why no one care about this problems?
    Because valhalla is amd friendship or something?

  • michalinos1390
    14 posts

    @k4n3_93 btw u should check ur ram at full pc load.
    Why? Because its possible that when ur GPU and CPU draw a lot power u have voltage drops in RAM and that can cause problems.

    U need to start furmark gpu torture test and then with the same time prime 95 memory test or occt memory test.

    Its possible that the game crashes for you at full load because of voltage dropping on ddr4 ram and become unstable. Thats why single tests like just Memtest its good only if ram is broken but not if u have volrage drops what shows only when alk components are at heavy load

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