web
You’re offline. This is a read only version of the page.
close
Skip to main content
Community site session details

Community site session details

Session Id :
Small and medium business | Business Central, N...
Suggested answer

Calculate VAT - error message : Server is not available / connection is lost

(3) ShareShare
ReportReport
Posted on by 4
Hello, we are running the Report - Calculate and post VAT declaration in our Navision2013R2
 
After launching it, around 12mins, we receive the error message - Server <xxxxxxxxx> is not available / connection is lost ; do you want to reconnect ? 
 
We have tried to :
- restart the service NAV and launch again
- launch on our serveur directly instead of user's post;
- check timeout one NAS : MaxValue 
 
But this did not resolve the issue ; the error persist 
 
If someone can help please ? 
 
Thank you very much ! 
 
I have the same question (0)
  • Suggested answer
    YUN ZHU Profile Picture
    94,617 Super User 2025 Season 2 on at
    Calculate VAT - error message : Server is not available / connection is lost
    Is this a standard report?
    Also, NAV2013 R2 has been out of support for over two years. Please upgrade to the latest version as soon as possible.
     
    Thanks
    ZHU
  • Suggested answer
    OussamaSabbouh Profile Picture
    3,220 on at
    Calculate VAT - error message : Server is not available / connection is lost
    Hello,
     
    Your NAV 2013 R2 VAT settlement report is simply running too long, and the NST drops the client session.
    It’s almost always caused by server timeouts or SQL load, not a bug.
    Increase NST timeout values and check SQL performance, or run the VAT calculation first and post it manually.
     
    Regards,
    Oussama Sabbouh

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

Quick Links

Responsible AI policies

As AI tools become more common, we’re introducing a Responsible AI Use…

Pallavi Phade – Community Spotlight

We are honored to recognize Pallavi Phade as our Community Spotlight honoree for…

Leaderboard > Small and medium business | Business Central, NAV, RMS

#1
OussamaSabbouh Profile Picture

OussamaSabbouh 3,236

#2
Jainam M. Kothari Profile Picture

Jainam M. Kothari 2,402 Super User 2025 Season 2

#3
YUN ZHU Profile Picture

YUN ZHU 2,078 Super User 2025 Season 2

Last 30 days Overall leaderboard

Featured topics

Product updates

Dynamics 365 release plans