reported Steam DCS will not launch after latest update

[HotdogWater]

I was logging into DCS for a mission today and three of us all running DCS through Steam received the message

 

"Important files are damaged: Please, repair.

Check dcs.log for details (log below)."

 

Woth the game failing to launch. All of us had previously run the game within the past 2 days with no issues. We verified file integrity with no affect and one of us reverted and still was unable to open. One also turned off antivirus with no affect.

DCS log files for all three state,

 

"ALERT SECURITYCONTROL: Can't run Steam!"

 

As best we can tell this is an issue introduced with the newest steam update. I've done the normal googling and nothing seems to be popping up. If anyone is encountering this or has a fix guidance would be appreciated/ED this may be a bigger problem if three people are having the same issue with nothing in common other than steam version.

Edited October 8, 2021 by HotdogWater

[CMD-Wade]

I am getting the same error, it's been working fine until now, no problems what so ever and all of a sudden I get this error.  Below is what was in my dcs.log.

=== Log opened UTC 2021-10-08 02:44:55
2021-10-08 02:44:55.262 ALERT   SECURITYCONTROL: Can't run Steam!
2021-10-08 02:44:55.265 INFO    DCS: Command line: "C:\GAMES\Steam\steamapps\common\DCSWorld\bin\DCS.exe" 
2021-10-08 02:44:55.265 INFO    DCS: DCS/2.7.6.13436 (x86_64; Windows NT 10.0.19043)
2021-10-08 02:44:55.265 INFO    DCS: DCS revision: 193433
2021-10-08 02:44:55.265 INFO    DCS: Renderer revision: 22322
2021-10-08 02:44:55.265 INFO    DCS: Terrain revision: 22345
2021-10-08 02:44:55.265 INFO    DCS: Build number: 662
2021-10-08 02:44:55.265 INFO    DCS: CPU cores: 6, threads: 12, System RAM: 32679 MB, Pagefile: 23552 MB
=== Log closed.
 

[RyanL]

Same issue here

[HORTON]

Same issue here, game will also not launch in offline mode for what its worth.

Edited October 8, 2021 by HORTON

[GTX2660Ti]

+1

[Schrute, Paper Sales]

Ditto

[Ryu8200]

Same issue.
 

I’ve tried verifying file and after still had same issue.

 

Now I’m trying a uninstall/reinstall. Will update with findings. 

[Hoya916]

same issue.  Steam DCS. Worked great a few days ago.

[Fergle F. Fergleson]

Same issue. Tried to let Steam validate the files, it said it found four to be updated/repaired, but even after that the error message was still present. Game is currently unplayable.

[Convexrook]

this is because of steam latest update, use steam beta and you will be back to normal, until steam fixes

[Rinz1er]

There is a new client update for steam that just got pushed 10 minutes ago. Go to Steam -> Check for steam client updates

This just fixed this issue for me.

Edited October 8, 2021 by Rinz1er

[Convexrook]

I'll stick with Beta for now, second update still broken on Windows 11

[Schrute, Paper Sales]

5 minutes ago, Rinz1er said:

There is a new client update for steam that just got pushed 10 minutes ago. Go to Steam -> Check for steam client updates

This just fixed this issue for me.

 

That worked, thanks.

[BIGNEWY]

We are looking into this but dont have any answer yet, the stable and open beta on steam are the same currently, there should be no problem. 

The steam client update hopefully fixes this for people. 

thanks

[BIGNEWY]

Hi all, 

just to update you all on this it seems there is a binary issue with steam beta client and DCS, the team are looking for a solution. 

As a work around you can launch DCS using the DCS.exe and bypass the steam library.

Thank you

[Rissala]

5 minutes ago, BIGNEWY said:

Hi all, 

just to update you all on this it seems there is a binary issue with steam beta client and DCS, the team are looking for a solution. 

As a work around you can launch DCS using the DCS.exe and bypass the steam library.

Thank you

Removing Steam beta also works immediately.

[Racoon-1-1]

 

Am 13.10.2021 um 23:38 schrieb BIGNEWY:

We are looking into this but dont have any answer yet, the stable and open beta on steam are the same currently, there should be no problem. 

The steam client update hopefully fixes this for people. 

thanks

I have this exact issue on steam open beta since the last client update(10-29-2021). DCS worked perfectly fine 10min before the update. In multi- and singleplayer.

The steam repair tool couldn't solve it either.

Zitat

As a work around you can launch DCS using the DCS.exe and bypass the steam library.

Nope, I get the same "Can't run" error message. I closed steam, clicked on the .exe and got the same message as if I would open it in steam directly.

 

=== Log opened UTC 2021-10-29 00:54:02
2021-10-29 00:54:01.900 ALERT   SECURITYCONTROL: Can't run Steam!
2021-10-29 00:54:01.902 INFO    APP: Command line: "S:\SteamLib_SamsungEVO970\steamapps\common\DCSWorld\bin\DCS.exe"
2021-10-29 00:54:01.902 INFO    APP: DCS/2.7.7.15038 (x86_64; Windows NT 10.0.19042)
2021-10-29 00:54:01.902 INFO    APP: Application revision: 195037
2021-10-29 00:54:01.902 INFO    APP: Renderer revision: 22490
2021-10-29 00:54:01.902 INFO    APP: Terrain revision: 22438
2021-10-29 00:54:01.902 INFO    APP: Build number: 687
2021-10-29 00:54:01.902 INFO    APP: CPU cores: 4, threads: 4, System RAM: 32699 MB, Pagefile: 49152 MB
=== Log closed.

 

 

Update:

And I get the same after I opted out of the open beta on Steam!

=== Log opened UTC 2021-10-29 01:24:26
2021-10-29 01:24:25.813 ALERT   SECURITYCONTROL: Can't run Steam!
2021-10-29 01:24:25.815 INFO    DCS: Command line: S:\SteamLib_SamsungEVO970\steamapps\common\DCSWorld\bin\DCS.exe
2021-10-29 01:24:25.815 INFO    DCS: DCS/2.7.6.13436 (x86_64; Windows NT 10.0.19042)
2021-10-29 01:24:25.815 INFO    DCS: DCS revision: 193433
2021-10-29 01:24:25.815 INFO    DCS: Renderer revision: 22322
2021-10-29 01:24:25.815 INFO    DCS: Terrain revision: 22345
2021-10-29 01:24:25.815 INFO    DCS: Build number: 662
2021-10-29 01:24:25.815 INFO    DCS: CPU cores: 4, threads: 4, System RAM: 32699 MB, Pagefile: 49152 MB
=== Log closed.

 

Edited October 29, 2021 by Racoon-1-1

[Racoon-1-1]

I am currently re-installing DCS, but for me it's nearly 150GB so this might take a while. XD

Maybe this is unrelated, but I found something weird in my DCS DLCs:

There seems to be something wrong with the timestamp (Unix Epoch ?) for the Mariana Islands Map DLC. Is it possible that this can have a negative effect on something?

kind regards

 

Edited October 29, 2021 by Racoon-1-1

[BIGNEWY]

No should not make a difference. 

 

If people are still having problems 

Please contact technical support here 
https://www.digitalcombatsimulator.com/en/support/
or email support@eagle.ru

The guide below will help you provide the data needed.
https://www.digitalcombatsimulator.com/en/support/faq/support_ticket/

Thank you
The Eagle Dynamics Team

[Racoon-1-1]

ok guys,

if someone still has this problem, with the help of the support guys I finally managed to get DCS to run again!!

Problem was that I didn't remember that I not only switched DCS to open beta (right click on the game in steam library). But also switched steam itself to the beta client (Steam -> Options -> beta subscriptions (loosely translated)). So basically those are two different things. I remembered that I thought like one year ago when I wanted to change to open beta, that you also need the steam beta client for this. But at least now I can say that after the unsubscription from steam beta, DCS still stayed in open beta (2.7.7). This just initiated a steam update and directly after it, DCS started without a problem again.

 

 

 

 

 

Edited October 30, 2021 by Racoon-1-1

[S. Low]

I just played DCS a couple days ago no problems, then I purchased some things on sale today and tried to launch DCS and I got the errors everyone is mentioning above. "Can't Run - Important files are damaged: Please, repair. Check dcs.log for details."

 

Log:

=== Log opened UTC 2021-10-30 00:13:00
2021-10-30 00:12:59.811 ALERT   SECURITYCONTROL: Can't run Steam!
2021-10-30 00:12:59.813 INFO    APP: Command line: "C:\Program Files (x86)\Steam\steamapps\common\DCSWorld\bin\DCS.exe"
2021-10-30 00:12:59.813 INFO    APP: DCS/2.7.7.15038 (x86_64; Windows NT 10.0.19043)
2021-10-30 00:12:59.813 INFO    APP: Application revision: 195037
2021-10-30 00:12:59.814 INFO    APP: Renderer revision: 22490
2021-10-30 00:12:59.814 INFO    APP: Terrain revision: 22438
2021-10-30 00:12:59.814 INFO    APP: Build number: 687
2021-10-30 00:12:59.814 INFO    APP: CPU cores: 6, threads: 6, System RAM: 32700 MB, Pagefile: 4864 MB
=== Log closed.
 

??????

Edit: I verified game files, didn't help. My drivers are up to date. Steam client is up to date. I also tried running the DCS.exe directly from C\Program Files(x86)\Steam\steamapps\common\DCSWorld\bin  but I got the same error.

 

Edit 2: As the above poster suggested, going into steam options and "Opting out" of steam beta resolved this for me. Thanks.

Edited October 30, 2021 by S. Low

[nosajthedevil]

Thank you Racoon-1-1 - Your fix worked for me!

[c0ff]

The issue with Steam Beta client is resolved in DCS openbeta 2.7.8

[Tocamac]

Getting the same error. Unable to workaround by clicking on DCS.exe as suggested. Validated game files. Next step?

 

Edit: Neither Steam nor DCS is on Beta channel for me. 

Edited November 20, 2021 by Tocamac

[BIGNEWY]

Update to DCS open beta public version on steam as a work around

 

it seems steam have pushed the steam beta client to steam normal client creating problems for DCS stable users.