Running app as a Windows service causes libcef.dll hardcrash (regression)

[dkrainyk]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

135.0.22

Operating System

Windows Server 2019

Architecture

x64

.Net Version

.Net 4.8

Implementation

OffScreen

Reproduction Steps

1. Build a console app with CefSharp OffScreen
2. Program it to open any website (e.g. google)
3. Install and run it as a Windows service

Expected behavior

Browser should load the site.

Actual behavior

Hard crash in libcef.dll, Exception code 0x80000003, fault offset 0x00000000019d5a53
crash dump stack trace analysis points to embedder_support/user_agent_utils.cc GetUniversalApiContractVersion

Regression?

It did work at least in 117, as we are trying to upgrade this service to 135 right now.
UPD: It works with CefSharp.OffScreen versions up to 126.2.18. Versions 127 and above are crashing.

Known Workarounds

If you run the same console app manually in the same environment it will work fine.

Does this problem also occur in the CEF Sample Application

Not Tested

Other information

Probably a upstream problem in CEF, but posting here for now to see if caused by CefSharp.

[amaitland]

It did work at least in 117, as we are trying to upgrade this service to 135 right now. We will try to determine the last working version.

There were major upstream changes in M126 see #4835

Hard crash in libcef.dll, Exception code 0x80000003, fault offset 0x00000000019d5a53

CEF has it's own issue tracker at https://github.com/chromiumembedded/cef/issues

https://github.com/cefsharp/CefSharp/wiki/Trouble-Shooting#loading-native-symbols-for-easier-diagnosis

[dkrainyk]

There were major upstream changes in M126 see #4835

Just to confirm the last working version for us is 126.2.18, it breaks on 127.

[amaitland]

You can try switching back to the alloy bootstrap in M127, that's the last version before it was removed.

Ultimately you will need to raise an issue at https://github.com/chromiumembedded/cef/issues (once you have a stack trace)