Download issue encountered on a particular website

-

 Today, I have successfully remedied the "Download issue encountered on a particular website."


Observed: User can able to access the website without any issues, unable to download the file from the website. Multiple users in different locations are facing the same issue.

Analysed:
+ As per the basic troubleshooting cleared the cache, close the browser then again tried to download the file, but still issue persists.
+ Checked the logs in Firewall and Web (Zscaler) side as well. No logs in firewall, Zscaler logs are allowed for the particular URL.
+ From the website owner everything is working fine with the same credentials and also can able to download while using outside of the organization network.

Hypothesized:
+ As per the all analysis and effect on the multiple users, confirmed the issue might be resides in Proxy/Firewall or from the web server due to lack of proper permissions to access the file from organization network.

Tested:
+ Checked the Test-NetConnection from the windows PowerShell to confirm the TCP is successful.
+ Extracted the HAR file from the browser and analysed, found out when user trying to download the file getting 403 error. while rest http requests every time getting 200 Ok.

+ A "403 Forbidden" error is an HTTP status code that indicates that the server understood the request, but it refuses to authorize it.
+ As per the response code, the issue might be from the server side in lack of proper permissions to download the file or settings employed in the web proxy.

Resolved:
+ While thoroughly analysed the HAR file, the packet with 403 Error resulting because the website is redirecting to another URL for downloading the file
+ I've checked in the Zscaler proxy logs for the redirected URL, the traffic is with the policy action "Not Allowed to upload/download encrypted or password-protected archive files".
+ https://lnkd.in/gwhEHJsM, using the policy reasons website, found out reason for the Policy Action is "The file was blocked because it was encrypted or password protected as Zscaler unable to scan for the viruses which the default option enabled for Malware Protection".
+ Proceeded with raising Zscaler request to bypassing the proxy blocking.

Grasped:
+ How to troubleshoot the problem preventing file downloads from a website
+ Default behaviour of Zscaler malware protection for the password protected files

Real-world practice reinforces the importance of a structured troubleshooting process. What recent troubleshooting challenge have you faced? Sharing our insights can help us all improve our problem-solving skills. Let's learn together!

Comments

Post a Comment

Popular posts from this blog

Understanding Titanic Survival Predictions with Decision Trees

-
Image
  Decision Tree: Supervised learning Algorithm Can do both Regression and Classification capabilities Inverted tree like structure with bunch of if-else statements The Titanic dataset is one of the most famous case studies in data science. It captures passenger details such as age, sex, class, fare, and family aboard, along with whether they survived or not. In this post, we’ll walk through how a decision tree model uses these features to predict survival, and what the visualization reveals. How the Decision Tree Works Note: These features are based on the importance table at the right side Root node: “Was the passenger male?” If female , survival chances are much higher. The tree then considers passenger class and fare to refine predictions. If male , survival chances drop significantly, but age and family aboard (siblings/spouses) still play a role. Each node in the tree shows: Gini impurity: How mixed the group is (lower / purer). Samples: Number of passengers in that group. ...
Read more

From Raw Logistics Data to Business Insights: An Excel Analytics Project (RFM Analysis)

-
Image
Analyzed logistics shipment data in Excel to evaluate delivery performance, cost, transit time, distance trends. Extended the analysis with RFM-based carrier segmentation to understand carrier utilization and spending patterns, supporting more data-driven operational decisions. My objective was to explore two practical business questions: How are delivery delays and shipment outcomes behaving across time and distance? How can carrier performance be evaluated using cost, transit time, shipment activity, and delivery performance? Starting with data quality I first reviewed the dataset for completeness and consistency. The initial cleaning process included identifying missing delivery dates and transportation costs, checking transit-day inconsistencies, and investigating numerical outliers. One thing I wanted to avoid was treating every unusual value as bad data. After null-value treatment, the working dataset contained 1,928 shipment records , while the dataset used after the selected ...
Read more

Unable to access the PaloAlto VM image via HTTPS

-
Image
Recently, I encountered an Issue of "Unable to access the PaloAlto VM image via HTTPS". Here's how I applied troubleshooting steps to resolve it: Configuration Changes done before: Configured static management IP & default gateway and rebooted the PA VM, then faced the issue. Observed: Unable to access the PaloAlto VM image via HTTPS. Unable to ping to the default Gateway from the PA and viceversa. Error- getting Destination Host Unreachable in both cases. Analyzed: + Checked the Management IP address and netmask, both are same as bridged network (physical) + Checked the default route "show routing route" - no route configured + While pinging from the base machine to PA and vice versa getting error as "Destination is Unreachable". Hypothesized: + As per the Error message, primarily issue is Network related, that the PA VM is unable to reach physical NIC IP. Tested: + Tried with changing the management IP address within the same subnet (as physic...
Read more