There may not be many fans but the 600 who are there are doing all they can to build an atmosphere, they are currently belting out a bit of Sweet Caroline as we wait for kick off.
NI looking for home comforts
Northern Ireland v Austria
Mark Sterling
BBC Sport NI at Windsor Park
Ask most visiting teams who have played Northern Ireland at Windsor Park recently - apart from Norway - and they will likely tell you how tough a place it is to come to.
However, NI have only won just two of their last nine competitive outings are their south Belfast home, drawing one and losing six in that sequence.
It is something manager Ian Baraclough will want to address tonight and he has put out a strong team with plenty of experience, despite it being just three days since that vital Euro play-off win over Bosnia.
The bottom line is, though, there are Nations League points to play for. NI have only got one from six games so far in this competition - and they'll want to put that right.
A good time to meet?
Northern Ireland v Austria (19:45 BST)
Getty ImagesCopyright: Getty Images
Marko Arnautovic was a thorn in Northern Ireland's side when the two sides met in the Nations League in 2018Image caption: Marko Arnautovic was a thorn in Northern Ireland's side when the two sides met in the Nations League in 2018
Northern Ireland met Austria in the Nations League two years ago but lost both games.
They were beaten by a stoppage-time goal from Valentino Lazaro in a 2-1 defeat at Windsor Park before Marko Arnautovic’s strike won it for the hosts in Vienna.
However, Austria are without Arnautovic tonight and they lost 3-2 at home to Romania last month, meaning this could prove to be as good a time as any for Northern Ireland to play them.
Remember when Will Grigg was on fire?
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
The pre-match music has taken on extra importance in stadiums with no, or very little, fans.
A wee nod to the Euro 2016 anthem from the Windsor Park DJ as the Northern Ireland players go through their warm-up, with Gala's 'Freed From Desire' playing over the tannoy.
If you're wondering what that has to do with Will Grigg, Google it.
Replacing Michael O'Neill as Northern Ireland manager was always going to be a tough gig for Ian Baraclough.
O'Neill was no stranger to a surprise team selection or two, but he had the full trust of the supporters - and no doubt the players too.
Baraclough's bravery with his decisions in Sarajevo has gone a long way in winning the trust of the Green and White Army in what was game three of his reign.
Sticking to the plan and bringing Liam Boyce and Conor Washington on in the final minute, allowing them to take vital penalties in the shoot-out without having touched the ball, was bold.
What it has done, though, is given him the authority to make whatever changes he needs to make in these Nations League matches ahead of November's play-off final against Slovakia. He will no doubt benefit from that.
Quick bit of trivia from Northern Ireland's dramatic penalty shoot-out win over Bosnia.
What do man-of-the-match Stuart Dallas, goalscorer Niall McGinn and winning spot-kick taker Liam Boyce have in common?
Answer - they all began their careers in the Irish League.
Part-time for the most part it may be - although more and more clubs are adapting a full-time approach - the Irish Premiership has become the ideal stage for players to earn moves to England or Scotland, and go on to play for NI.
Joel Cooper has enjoyed success as a Linfield player at Windsor Park. Having moved to Oxford United in the summer, he will be hoping tonight could be the night for him to become the next off the Irish League production line to make the jump to international football.
Post update
Northern Ireland v Austria (19:45 BST)
Getty ImagesCopyright: Getty Images
And here's a couple of those fans, who are clearly looking forward to a bit of live football judging by their big, beaming smiles.
Six hundred fans have been allowed into Windsor Park for tonight's game.
It won't exactly make for a vociferous atmosphere but it is a step in the right direction and, all being well tonight, should lead to more fans being allowed to attend future games.
"We’ve been working hard behind the scenes for this eventuality and delighted to see that come to fruition," said Irish FA chief executive Patrick Nelson.
"Having even a small band of the Green and White Army in on Sunday is great news."
How to follow
You can listen to this game on BBC Radio Ulster & online, while highlights will be on BBC One NI tonight at 22:30 BST.
The state of play
Northern Ireland v Austria (19:45 BST)
.Copyright: .
Northern Ireland have one point from two games so far in this year's Nations League and are still waiting for their first-ever win in the competition at the seventh time of asking.
Could tonight be the night?
Anyone for the 'guess the NI formation' game?
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
For the tactical enthusiasts amongst us, there is nearly always plenty to get your teeth into when it comes to what formation Northern Ireland are going to line up in.
Let's deal with the personnel first and there are five changes from Thursday night in Bosnia. In come goalkeeper Michael McGovern, full-back Conor McLaughlin, wingers Gavin Whyte and Jordan Jones and striker Kyle Lafferty.
Bailey Peacock-Farrell, George Saville, Niall McGinn, Corry Evans and Josh Magennis drop out.
If it's a 4-3-3 as it was in Sarajevo, it looks like McLaughlin in at full-back with Paddy McNair to the right of captain Steven Davis in midfield and Dallas to the left, with Jones and Whyte either side of Lafferty in the front three.
It could be a 4-2-3-1, though, which would likely mean Dallas alongside Davis as the middle two, with McNair in behind Lafferty.
Still with us? Good. Either way, we'll soon find out.
Team news
Northern Ireland v Austria (19:45 BST)
With this being the second game in a triple header for Northern Ireland there's no surprise to see a few changes - five to be exact.
In come Michael McGovern, Jordan Jones, Conor McLaughlin, Gavin Whyte and Kyle Lafferty for the hosts. Bailey
Peacock-Farrell, Corry Evans, Josh Magennis, George Saville and Niall
McGinn are the players to drop out of the side.
A possible boost for Northern Ireland is that there is no Marko Arnautovic in the Austria XI, although Bayern Munich man David Alaba is back in the side after missing the friendly win against Greece in midweek with a muscle issue.
Northern Ireland have not enjoyed matches against Austria in recent years,
having lost the last three encounters.
The most recent, of course, was the Nations League meeting
here at Windsor Park two years ago when a 93rd-minute strike by Valentino Lazaro gave the visitors
a 2-1 win that condemned NI to bottom place in the group.
It’s a much more even picture historically, however, with NI
having won four and drawn three in the 11 times the countries have faced each
other.
The goal difference is identical, too – scored 18, conceded 18.
Nicely poised, you could say….
No time to rest
Getty ImagesCopyright: Getty Images
Nothing stands still in football, even more so in these unusual times.
Just three days ago, Northern Ireland beat Bosnia-Herzegovina to go through to the finals of the Euro 2020 play-offs and today they are back in action as they continue their Nations League campaign.
Ian Baraclough's men are up against Austria looking to get up and running in Group B1.
Live Reporting
Gary Rose
All times stated are UK
Post update
Northern Ireland v Austria (19:45 BST)
The two teams are out on the pitch. Time now for the anthems.
Post update
Northern Ireland v Austria (19:45 BST)
Post update
Northern Ireland v Austria (19:45 BST)
There may not be many fans but the 600 who are there are doing all they can to build an atmosphere, they are currently belting out a bit of Sweet Caroline as we wait for kick off.
NI looking for home comforts
Northern Ireland v Austria
Mark Sterling
BBC Sport NI at Windsor Park
Ask most visiting teams who have played Northern Ireland at Windsor Park recently - apart from Norway - and they will likely tell you how tough a place it is to come to.
However, NI have only won just two of their last nine competitive outings are their south Belfast home, drawing one and losing six in that sequence.
It is something manager Ian Baraclough will want to address tonight and he has put out a strong team with plenty of experience, despite it being just three days since that vital Euro play-off win over Bosnia.
The bottom line is, though, there are Nations League points to play for. NI have only got one from six games so far in this competition - and they'll want to put that right.
A good time to meet?
Northern Ireland v Austria (19:45 BST)
Northern Ireland met Austria in the Nations League two years ago but lost both games.
They were beaten by a stoppage-time goal from Valentino Lazaro in a 2-1 defeat at Windsor Park before Marko Arnautovic’s strike won it for the hosts in Vienna.
However, Austria are without Arnautovic tonight and they lost 3-2 at home to Romania last month, meaning this could prove to be as good a time as any for Northern Ireland to play them.
Remember when Will Grigg was on fire?
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
The pre-match music has taken on extra importance in stadiums with no, or very little, fans.
A wee nod to the Euro 2016 anthem from the Windsor Park DJ as the Northern Ireland players go through their warm-up, with Gala's 'Freed From Desire' playing over the tannoy.
If you're wondering what that has to do with Will Grigg, Google it.
Warming up
Northern Ireland v Austria (19:45 BST)
With bravery comes authority
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
Replacing Michael O'Neill as Northern Ireland manager was always going to be a tough gig for Ian Baraclough.
O'Neill was no stranger to a surprise team selection or two, but he had the full trust of the supporters - and no doubt the players too.
Baraclough's bravery with his decisions in Sarajevo has gone a long way in winning the trust of the Green and White Army in what was game three of his reign.
Sticking to the plan and bringing Liam Boyce and Conor Washington on in the final minute, allowing them to take vital penalties in the shoot-out without having touched the ball, was bold.
What it has done, though, is given him the authority to make whatever changes he needs to make in these Nations League matches ahead of November's play-off final against Slovakia. He will no doubt benefit from that.
Post update
Northern Ireland v Austria (19:45 BST)
Irish League comes to the fore
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
Quick bit of trivia from Northern Ireland's dramatic penalty shoot-out win over Bosnia.
What do man-of-the-match Stuart Dallas, goalscorer Niall McGinn and winning spot-kick taker Liam Boyce have in common?
Answer - they all began their careers in the Irish League.
Part-time for the most part it may be - although more and more clubs are adapting a full-time approach - the Irish Premiership has become the ideal stage for players to earn moves to England or Scotland, and go on to play for NI.
Joel Cooper has enjoyed success as a Linfield player at Windsor Park. Having moved to Oxford United in the summer, he will be hoping tonight could be the night for him to become the next off the Irish League production line to make the jump to international football.
Post update
Northern Ireland v Austria (19:45 BST)
And here's a couple of those fans, who are clearly looking forward to a bit of live football judging by their big, beaming smiles.
600 fans watching on
Northern Ireland v Austria (19:45 BST)
Six hundred fans have been allowed into Windsor Park for tonight's game.
It won't exactly make for a vociferous atmosphere but it is a step in the right direction and, all being well tonight, should lead to more fans being allowed to attend future games.
"We’ve been working hard behind the scenes for this eventuality and delighted to see that come to fruition," said Irish FA chief executive Patrick Nelson.
"Having even a small band of the Green and White Army in on Sunday is great news."
How to follow
You can listen to this game on BBC Radio Ulster & online, while highlights will be on BBC One NI tonight at 22:30 BST.
The state of play
Northern Ireland v Austria (19:45 BST)
Northern Ireland have one point from two games so far in this year's Nations League and are still waiting for their first-ever win in the competition at the seventh time of asking.
Could tonight be the night?
Anyone for the 'guess the NI formation' game?
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
For the tactical enthusiasts amongst us, there is nearly always plenty to get your teeth into when it comes to what formation Northern Ireland are going to line up in.
Let's deal with the personnel first and there are five changes from Thursday night in Bosnia. In come goalkeeper Michael McGovern, full-back Conor McLaughlin, wingers Gavin Whyte and Jordan Jones and striker Kyle Lafferty.
Bailey Peacock-Farrell, George Saville, Niall McGinn, Corry Evans and Josh Magennis drop out.
If it's a 4-3-3 as it was in Sarajevo, it looks like McLaughlin in at full-back with Paddy McNair to the right of captain Steven Davis in midfield and Dallas to the left, with Jones and Whyte either side of Lafferty in the front three.
It could be a 4-2-3-1, though, which would likely mean Dallas alongside Davis as the middle two, with McNair in behind Lafferty.
Still with us? Good. Either way, we'll soon find out.
Team news
Northern Ireland v Austria (19:45 BST)
With this being the second game in a triple header for Northern Ireland there's no surprise to see a few changes - five to be exact.
In come Michael McGovern, Jordan Jones, Conor McLaughlin, Gavin Whyte and Kyle Lafferty for the hosts. Bailey Peacock-Farrell, Corry Evans, Josh Magennis, George Saville and Niall McGinn are the players to drop out of the side.
A possible boost for Northern Ireland is that there is no Marko Arnautovic in the Austria XI, although Bayern Munich man David Alaba is back in the side after missing the friendly win against Greece in midweek with a muscle issue.
Finely balanced
Northern Ireland v Austria (19:45 BST)
Mark Sterling
BBC Sport NI at Windsor Park
Northern Ireland have not enjoyed matches against Austria in recent years, having lost the last three encounters.
The most recent, of course, was the Nations League meeting here at Windsor Park two years ago when a 93rd-minute strike by Valentino Lazaro gave the visitors a 2-1 win that condemned NI to bottom place in the group.
It’s a much more even picture historically, however, with NI having won four and drawn three in the 11 times the countries have faced each other.
The goal difference is identical, too – scored 18, conceded 18.
Nicely poised, you could say….
No time to rest
Nothing stands still in football, even more so in these unusual times.
Just three days ago, Northern Ireland beat Bosnia-Herzegovina to go through to the finals of the Euro 2020 play-offs and today they are back in action as they continue their Nations League campaign.
Ian Baraclough's men are up against Austria looking to get up and running in Group B1.