Why some android devices thinks that file with APK extension is a directory and others don't?

[proteancode]

I have a private APK file hosted on some webserver, but that webserver downloads this as a zip file (it has to do sth with headers). I can just rename the file to use .apk extension and can install it with my Xiaomi, but the same method won't work with device like Lenovo Tab M10 HD (both phones running Android 10).

I have tried two file managers, one is top-downloaded and second one is a Total Commander

I am confused, looking for some ideas

 

[Droidriven]

I have a private APK file hosted on some webserver, but that webserver downloads this as a zip file (it has to do sth with headers). I can just rename the file to use .apk extension and can install it with my Xiaomi, but the same method won't work with device like Lenovo Tab M10 HD (both phones running Android 10).

I have tried two file managers, one is top-downloaded and second one is a Total Commander

I am confused, looking for some ideas

Try extracting the zip, does it have the apk inside the zip?

 

[proteancode]

Try extracting the zip, does it have the apk inside the zip?

No. I will check if I can modify return headers of web servers so it won't think its a zip, but damn right APK

Maybe there is some filesystem indexing issue

 

[ze7zez]

(...) I can just rename the file to use .apk extension (...)

I have tried two file managers, one is top-downloaded and second one is a Total Commander

I am confused, looking for some ideas

Using Total Commander, pack the apk file with the password (in TC check the Encrypted box) and upload it to the server.