# Wifi synch won't detect computer

**URL:** <https://discuss.zetetic.net/t/wifi-synch-wont-detect-computer/3493>\
**Category:** Beta\
**Created:** [March 15, 2019, 12:14pm UTC](https://discuss.zetetic.net/t/wifi-synch-wont-detect-computer/3493 "2019-03-15T12:14:28Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![DickW](https://avatars.discourse-cdn.com/v4/letter/d/ac8455/32.png) [@DickW](https://discuss.zetetic.net/u/DickW)\
**Post date:** [March 15, 2019, 12:14pm UTC](https://discuss.zetetic.net/t/wifi-synch-wont-detect-computer/3493/1 "2019-03-15T12:14:28Z")

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When I try to operate wifi sych to my Win10 desktop my phone app won’t detect the PC. Up to now it’s worked perfectly. I’m running v3.6.7. I use Avast Free virus checker which has Codebook listed as an exception, as does Win Defender on my private network. My last synch was in early December which was flawless as usual but I have just added some entries and need to resynch. I’ve confirmed that my private network is OK and I have tried disabling both Avast and Defender without success. Any ideas?

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**Author:** ![developernotes](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.zetetic.net/developernotes/32/1309_2.png) [@developernotes](https://discuss.zetetic.net/u/developernotes)\
**Post date:** [March 15, 2019, 1:57pm UTC](https://discuss.zetetic.net/t/wifi-synch-wont-detect-computer/3493/2 "2019-03-15T13:57:14Z")

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Hi @DickW

I’m sorry to hear you are experiencing an issue with WiFi synchronization. We have a post on troubleshooting some of this here:

> [@Troubleshooting WiFi Sync](https://discuss.zetetic.net/t/troubleshooting-wifi-sync/36):
>
> Enable WiFi Sync on the Desktop Before we get started, be sure that: You have [enabled WiFi sync](https://discuss.zetetic.net/t/getting-started-with-sync/35) under Codebook preferences on the Desktop Codebook is currently running on the Desktop and you are logged in Interference Are you running the Windows or OS X firewall, a VPN client, virus protection software or a similar product? If so, please try to configure your software to allow connections to port 57419. This should allow connection attempts from Codebook on your mobile device to Codebook runn…

Aside from that, you might want to make sure your mobile device and Windows 10 machine are on the same subnet. You can also try to manually enter the IP address of your computer in the sync screen of Codebook on your mobile device.

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**Author:** ![DickW](https://avatars.discourse-cdn.com/v4/letter/d/ac8455/32.png) [@DickW](https://discuss.zetetic.net/u/DickW)\
**Post date:** [March 15, 2019, 6:38pm UTC](https://discuss.zetetic.net/t/wifi-synch-wont-detect-computer/3493/3 "2019-03-15T18:38:53Z")

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Thanks for that. After posting my question I did a synch via dropbox. When I got your answer, I checked the desktop for wifi synch and it was already configured that way. When I tried wifi again, it worked. Something changed but I have no idea what!

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**Author:** ![developernotes](https://sea2.discourse-cdn.com/flex016/user_avatar/discuss.zetetic.net/developernotes/32/1309_2.png) [@developernotes](https://discuss.zetetic.net/u/developernotes)\
**Post date:** [March 15, 2019, 8:26pm UTC](https://discuss.zetetic.net/t/wifi-synch-wont-detect-computer/3493/4 "2019-03-15T20:26:40Z")

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Hello @DickW

Excellent, we are happy to hear everything is working again for you!