>>>Hi All,
>>>
>>>Just in one week time we have two customers who have upgraded their workstations to Windows 10 calling for support because of our application errors out with a C5. The point of where it happens seems to be random.
>>>
>>>So far I have advised them to
>>>- Check the network driver
>>>- Check the printer driver and test while a different printer is the default printer
>>>- Check the graphics driver and upgrade that if needed
>>>- Disable the virus scanner temporarily to see whether it makes a difference
>>>
>>>- Delete the user profile on that machine and restart Windows
>>>
>>>Though I'm not able to check whether they all try that, it sounds like the problems are still there.
>>>
>>>This application has been very stable so far, and this particular build has been running on hundreds of workstations without a problemin the past, so I pretty much rule out it is our application.
>>>We are running our application with SET RESOURCE OFF, so it also does not have anything to do with foxusers.dbf
>>>
>>>
>>>Does anyone have the same experience with Windows 10 and a VFP9 app ?
>>>
>>>
>>>Walter,
>>
>>We c5 randomly on w7, w8 and w10.
>>I have not seen a worsening with W10.
>>
>>For us, the biggest problem is that messagebox not appears,
>
>You mean that it crashes without any error message?

no. C5 show the crash message, but it is very rare.

it is a general problem, with a frequency of 90% !

messagebox does not put in the foreground window,
Application stopping, keypress events doesn't go into the messagebox, a pain!
On XP this doesn't occur!!!!

By pressing ALT, Enter, Space, changing application and returning on VFP ...
and swearing, you can bring up the messagebox.
I tried it with a direct call windows api, setting any flags, but to no avail.

>
>>and that cursors give random corruption errors
>>( redo same code and cursor works ! )
>
>We have seen that in the past in VFP8 and VFP prior to SP2. having a few SYS(1104) on strategic places (after REQUERY() and before TABLEUPDATE()) Fixed that.

We try.