Can't Connect to QNAP from PC

[Baldbug]

We did a Firmware upgrade with our Qnap on 2nd October which knocked out the Daily Backup and connection to PC.
We have had 3 x techies look at the QNAP setup none of 3 Techies can get a connection from the QNAP to a PC of PC Laptop.
We can access the Qnap with all our Apple Macs via Apple AFP.
A backup has been done and is now set to backup each day.
There is a Query raised with QNAP HQ that one of our techies sent suggesting there is a bug in latest Firmware update along with all the backup and error logs.

[Baldbug]

Update is that Team Viewer is engaged and being used by QNAP techie organised by my local techie.

Looks like some "edited Shared Folder permissions to enable and a whole "Delete Me" file that I will leave for my techie to view tmw.

[dolbyman]

Next time, let one of your "techies" post.

No usable info in here:
NAS model?
Firmware version?
Windows Version used?

[Baldbug]

All happy here now, PC and Macs all have access to Qnap.

[dolbyman]

*shrugs* .. no infos given even for a closing statement

[Moogle Stiltzkin]

All happy here now, PC and Macs all have access to Qnap.

so what was the problem and how did you fix it? so others can learn from this?