Point to Site VPN timeouts

[admin admin]

Hi I have an Azure domain environment(no-onprem) and have some users on a dissimilar domain that connect to it using the point-to-site VPN to access file shares.  The site-to-site VPNs work fine.  

The problem is they get disconnected from the point-to-site vpns sporadically throughout the day.  Is there a timeout or setting I can adjust to keep them connected all the time?  

[#2]

you must clamp MSS at 1350. if not this could result in what you are mentioning.

have a look here, it will show you all the settings that are required for Azure.

Update: I did not notice this was Point to Site, what OS are they running ?

[#3]

I appreciate the feedback but I don't think that's an option on the client side, there's no hardware that we can adjust this on.  We are using Windows 7.  

[#4]

Is the disconnet during idle periods or does it happen during use ?

[#5]

Sorry I should have specified them as idle timeouts, yes.  

[#6]

I found this:

https://social.technet.microsoft.com/wiki/contents/articles/33193.azure-always-on-vpn-point-to-site-...

it uses scripts to make the tunnel always on. It is the only solution i have been able to find, unless you want to use Routing and Remote access in a IaaS VM

[#7]

We have a similar problem where the user's connection to Azure VPN drops frequently.  At times, the user can fix the problem by rebooting his/her PC.  Other times, there is no solution.  A work-around is to have the user run the following .bat file (assumption is that user only has one RAS connection profile and one .pbk file)

:loop
forfiles /p %USERPROFILE%\appdata\roaming\microsoft\network\connections\cm /s /m *.pbk /c "cmd /c rasdial @FNAME /PHONEBOOK:@FILE"
timeout 30
goto loop

(note that the forfiles command above may be wrapped in the MSDN window.  batch file only has 4 lines.)