0xc0000005 access violation running app from mapped drive but no problem from UNC or local

I have an application (.exe - 32 bit) that is giving the access violation error when run from a mapped (net use) drive on a shared folder.   NO error if I run it using the FULL UNC path name and NO error if I copy it to my local drive and run it.
The error is below.   I have run scans for virus and malware, etc. and come up with nothing. I have run diagnostics on my memory and nothing is wrong with the hardware. Also, if I create a new user profile, the app will run fine under
that profile - initially.   The problem seems to come up after I install something new.  I know the new software is not infected (VS 2013) and the software installed before the new profile test was not the same software.
I didn't give all the info below because it's legacy software few would know about and I do NOT have the source code.   It is 32 bit and has worked fine for 15 years or more - without this problem.    Thanks in advance for any help
you can provide.
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x7501e4e4
Faulting process id: 0x31d8
Faulting application start time: 0x01d07f8a4598879e

Hi Johnny，
We wonder if you get this error on all PCs or only on your Windows 7 PCs.
If your application happens to hit a page of memory that is not present, a standard page fault will trigger, telling Windows it needs to fill that page. If the network happens to be down at that moment, Windows will be unable to satisfy the page-fault. So
Windows throws an EXCEPTION_IN_PAGE_ERROR (0xC0000005). Since you mentioned that it works under new user profile initially and already tested your memory, the most typical causes for the ‘0xC0000005: Access Violation’ error are: corrupt registry, malware,
updated software/device driver.
Check your issue with malware, VS 2013 and firewall closed under new account.
If this issue happened recently, you could simply restore your system to earlier point then check your issue.
Check your issue under clean boot and safe mode with network (using new account)
https://support.microsoft.com/en-us/kb/929135
Regards,
D. Wu
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0xc0000005 access violation running app from mapped drive but no problem from UNC or local

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