Steps to Diagnose

1. Open the Developer Tools in your browser (F12).

2. Go to the Network tab and reload the page.

3. Look for the CSS files in the list of resources being loaded. Check their status codes and paths.

4. Look at the Console tab for any errors related to loading the stylesheets.

Thank You Dar for the quick response, i will check and msg you,

For test url working fine by loading images, for this new prod setup only its showing like this, test url page working fine, this new prod url not showing images, same software same setup,

i will check this and msg you back,

Below are the snapshots

I don’t think your CSS files are being returned properly - both of the CSS files show as 48 bytes which is not right. I think you should try to access the CSS files directly and I guess you’ll see an error even though the HTTP status is 200. I’d also check the MIME setup to make sure nothing has gone wrong there.

Also, you’re running a very old TAS, based on UPD10 from December 2020, please consider taking a newer UPDATE (we’re on UPD24 now ) so that you get the functional and technical improvements we’ve done over the years.

Best regards,

Rukmal

Hi Rukmal,

Thanks for the information, 

Same software and same setup working fine in test, and i used the same software and setup in prod, not understanding that why that css files not proper? we cant just update the customer environment from upd 10 to 24 as of now, i can understand the updates will resolve, instaed of update how we have to proceed now with the existing setup, what could be wrong , in test same working. plz guide me on next steps.

/Siva

@Siva.Prasad I’d start by appending /Styles/Site.css to the base URL of your TAS. I don’t want to type it here because that would expose your system too much, but I hope what I mean is clear. Then, I’d make sure that your TAS is serving the CSS file correctly, and I believe resolving that would make your pages render correctly.

Best regards,

Rukmal

Hi Rukmal,

Thank you for the inputs,

As you suggested i have cross checked the /styles/site.css files between Prod and Test.

Both contains same size and same date modified, but in Test its working and Prod not working.

I feel PROD IIS unable to read the css files proper, is there any settings to be checked in Prod IIS for css reading?

TEST (Working)

PROD (Not Working)

Both contains same content text in Site.css, and both image folders contains same images.

Thank you for your support.

/Siva

@Siva.Prasad not quite this, you should compare the CSS files that the TAS and IIS serve you, for example https://your-prod-tas.url/Styles/Site.css since your Developer Tools shows both CSS files as being 48 bytes. I think this should reveal the root cause.

In fact, your URL currently returns an HTTP 503 “Http/1.1 Service Unavailable” error, so unless you’ve whitelisted internal traffic only, you should check external access too.

Best regards,

Rukmal

Hi Rukmal,

Thanks again,

Now i browsed the URL as you suggested.

Prod (Not Working) Showing blank white page no error!

Test (Working)

In Test showing CSS file content but in PROD its not showing in browser even the CSS file have the content.

As you said 

Customer whitelisted internal traffic only, i will ask customer IT Team to check external access too.

Thanks i will do that and update you the status here, if you got any more ideas please msg me.

Thanks for your kind support :)

/Siva

HI Rukmal,

I have checked with Customer IT Team about Whitelisting of both internal and external traffic and they confirmed that they allowed both.

After that i investigated/googled and found that its not issue with the network,

in new PROD Server, customer not configured the IIS proper, they missed few features compared to TEST,

Now i reconfigured the IIS with missed features they Isssue has been resolved and started working, CSS files are reading proper.

Thank You @Dar and @Rukmal Fernando to you both for helping me all the time when i faced the issues. Thank you. Issue has been resolved now.