# Acceleport 4p on W2K SP4 server

**URL:** <https://forums.digi.com/t/acceleport-4p-on-w2k-sp4-server/7919>\
**Category:** USB Devices\
**Created:** [November 10, 2004, 12:18pm UTC](https://forums.digi.com/t/acceleport-4p-on-w2k-sp4-server/7919 "2004-11-10T12:18:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![klm1](https://avatars.discourse-cdn.com/v4/letter/k/8dc957/32.png) [@klm1](https://forums.digi.com/u/klm1)\
**Post date:** [November 10, 2004, 12:18pm UTC](https://forums.digi.com/t/acceleport-4p-on-w2k-sp4-server/7919/1 "2004-11-10T12:18:06Z")

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My application send query through Acceleport com ports (20bytes)every 4s and receive answer (980 bytes). I use driver 5.0.315.  
After few hours all Digi com ports (including unused) locks. My application dead locks on read or write port function. After this when I try to open one of the unused Digi com port, Hyperteminal dead locks.  
The same application run on standard PC com ports without any problems for a weeks.  
I think there is a problem with the driver - any ideas.

Kiril Mazrev