BHO doesn't seem to load on a some (64 bit) workstations

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BHO doesn't seem to load on a some (64 bit) workstations
There are a couple of workstations on which our BHO doesn't load, but is Enabled; it works elsewhere 
Ira Whitman




Posts: 56
 Joined: 2010-01-21
Our product, IE Link, uses a BHO built with Add In Express 9.3.6125.0. Deployments are generally successful, but we have one customer at which 2 out of 3 client workstations don't work.

The working client is IE 11 on Windows 7 32 bit. Our installer generated a registration log, shows success. Every time IE launches it loads our BHO, generating a loader log, which also shows success. Most importantly, our BHO generates our custom context menus, which function correctly.

The non-working clients are Windows 7 64 bit and Windows 10 64 bit respectively. IE 11 is on both. Both have the same symptoms:
* Installer generates registration log showing success; it seems like the same as the working client.
* There is no loader log at all. We don't know for sure if our BHO failed to load or not; if it failed, we have no indicator why.
* IE shows our BHO, "IE Link" with Status "Enabled".
* Most importantly, our custom context menus don't appear.

Without any error message or log telling us what is wrong, we don't know what to do next.

This zip files contains logs and screenshots describing the working client and one non-working client: https://1drv.ms/u/s!AoKZe4CWLZnmsCOU34qAIt5iC149
Posted 23 Apr, 2019 13:15:57 Top
Sergey Grischenko


Add-in Express team


Posts: 7233
 Joined: 2004-07-05
Hi Ira,

Please check if the 'Enable third-party browser extensions' option is enabled on the problematic PCs (Internet Options -> Advanced -> Browsing).
Posted 24 Apr, 2019 09:03:33 Top
Ira Whitman




Posts: 56
 Joined: 2010-01-21
Well, this is embarrassing. I finally got word back from our service engineer, and that did it.
I guess I should have known to look for it. Maybe I did know, once, but had forgotten.

Thank you!
Posted 29 Apr, 2019 13:43:49 Top
Andrei Smolin


Add-in Express team


Posts: 19011
 Joined: 2006-05-11
Hello Ira,

This happens, you know. Thank you for letting us know!


Andrei Smolin
Add-in Express Team Leader
Posted 30 Apr, 2019 02:58:01 Top