AVG - Web Browsers - Could not hook CoGetObject - [SOLVED]

[cafe_cyber]

Hi, hope someone can help me with this issue as I am desperate after trying to fix it for hours.

PROBLEM
All my programs work fine in Sandboxie except (suddenly) Internet Explorer and Chrome. When starting sandboxed browsers, I receive the following error messages:
- for Internet Explorer:
SBIE2303 Could not hook CoGetObject (1)

- for Google Chrome:
SBIE2303 Could not hook CoGetObject (1)
SBIE2303 Could not hook CoGetObject (1)
SBIE2203 Failed to communicate with Sandboxie Service: *GUIPROXY_00000001 - chrome.exe [FF000002]

CONFIG

• Windows 7 64 bit

• Sandboxie Version 5.20 (64 bit) registered and licence activated until 2018

• Internet Explorer 11 without ad-blocker

• Google Chrome Version 60.0.3112.113 (Official Build) (64-bit) without ad-blocker

• AVG AntiVirus Free 17.6.30.29

• Windows Firewall

• CryptoPrevent = disabled

TRIALS AND ERRORS
None of the following tricks worked:

• uninstalling and reinstalling Sandboxie

• uninstalling and reinstalling Sandboxie in a different folder

• deleting the content of the sandbox

• creating a new sandbox

• adding Sandboxie to the Windows firewall exception list

• adding the Sandboxie Program Files folder to the AVG Resident Shield exceptions

MY ANALYSIS
Sandboxie was working fine before, and still works fine for all non-browsing programs (File Explorer, Audacity, VLC, etc.). Both IE and Chrome work fine when not sandboxed. So my Sandboxie install is OK, I guess. However something is blocking all sandboxed browsers from opening correctly. Is there a Sandboxie log that would show what is happening when I try to start IE or Chrome?

[Syrinx]

For AVG, tested on 17.6.3029 along with chrome.
You can add this in the boxes you are having problems with alongside the new version of AVG to prevent the crash.

Code: Select all

ClosedFilePath=*avg*snxhk*.dll

or via the GUI Sandbox Settings > Resource Access > File Access > Blocked Access > Add >

Code: Select all

*avg*snxhk*.dll

[Jimmy888]

Worked great.
Thanks

[KevinRt66]

I just started having this problems today though it's worked fine every day in the past

It's very vague & unclear what's meant by "add this in the boxes"

When I goto AVG settings, exceptions I added "ClosedFilePath=*avg*snxhk*.dll" there & it didn't work

via the GUI Sandbox Settings > Resource Access > File Access > Blocked Access > Add >

I can't add "*avg*snxhk*.dll" it's asking me to select a directory/path

Any help with the needed details is appreaciate. Thx!

[cafe_cyber]

It worked! Thanks Syrinx

[KevinRt66]

I'm having this problem too
"Could not hook CoGetObject (1)"
"Sandboxed program has crashed: firefox.exe"

Windows 7 64bit
Sandboxie 5.20
FF 55.0.3
AVG 17.6 (latest)

I tried
"add this in the boxes you are having problems with alongside the new version of AVG to prevent the crash.
ClosedFilePath=*avg*snxhk*.dll

though that's very vague & unclear where we put it. Can you clarify incase I did it wrong?

I tried
" via the GUI Sandbox Settings > Resource Access > File Access > Blocked Access > Add >
*avg*snxhk*.dll

though it won't let me enter that & wants me to select folder/path. I entered 3 that have AVG DLL's in them & it didn't help

Will there be a fix in the next release so others don't have this problem & incase we can't get it resolved & I have to wait?

[henryg]

Try Edit/Add rather than Add?

Personally, I put "ClosedFilePath=*avg*snxhk*.dll" in the config manually under Global Settings (Configure/Edit Configuration) but it depends what you want.

Good luck.

[utmuk]

Reinstall helped me. I don't have AVG.

PS. I also restored the same Sandboxie.ini from old installation. So I doubt this has to do with settings.