Do you have the same problem for other device brand/model?  If the problem is specific to Panasonic FZ-AZ,  maybe you should check the name(s) of any system app(s) or background service(s) run to during the app installation process when kiosk is not enabled.   Then, try to add the bundle-ID/activity name in your kiosk profile or application-run-control whitelist.

Also where did you source the APK from? If you pulled it from an APK mirror or off a sample device it may not be a complete APK and may be missing components that would work on different devices. Meaning if you installed the APK on a different device model than the FZ-AZ and then extracted the APK from that device it may not be compatible.

Managed Play Distribution would at least ensure that a legitimate version of MS Teams was being installed on your devices, but it would also carry the risk of the app updating at any time without your control which I can understand the concerns around. 

Hi Matt,

Tried with 2 different APKs (1 from APKMIRROR and 1 from APKPURE)

Outside of our lockdown, we can install, from inside our lockdown, on most devices we can not.

(I don't think an incomplete APK is the cause of our problems)

Hi Raymond,

Tried with the process-viewer (in Remote control), unfortunatly no export possibilities (v13.4), only printscreens.

One process that isn't present in Lockdown mode is com.android.vending (Google Play Store). The process appears when the lockdown is lifted. I suspect installation might be failing because of the absence of this process (in Lockdown)?

Another process that temporarely pops up: com.android.defcontainer ('Helper package')

Dirk

When the Lockdown and User Mode is active Application Run Control will be applied. It sounds like you may have a blacklist in Application Run Control that is restricting a lot of apps. You could remove them one by one from that blacklist to see what app may be leading to this condition. 

For security and legal/licensing reasons,   would not recommend my customers to use apk file downloaded from APKMIRROR or APKPURE.

If your devices include any software similar to Google-Play-Protect to scan/filter out potential malware before installation of apk, make sure you have them properly configured/added in your Mobicontrol kiosk/ARC-whitelist.

I just ran into this recently, and it might be a similar issue. Check the Architecture of the APK. We had to use Teams on armeabi-v7a for an older device. APKmirror had these different builds listed under "variants"