When many users try to open a specific website or access the unified gateway login page, they encounter the “HTTP/1.1 service unavailable” issue. This post from MiniTool teaches you how to fix the error.
On This Page :- HTTP/1.1 Service Unavailable
- How to Fix HTTP/1.1 Service Unavailable
- Final Words
HTTP/1.1 Service Unavailable
HTTP/1.1 service unavailable error messages are also known as HTTP status codes. Some users receive an "HTTP/1.1 service unavailable" error when trying to access a specific website or access the unified gateway login page. The following are some reasons for the issue.
- Poor Internet connection
- Windows add-ons
- Website backend issues
- The outdated or broken browser
- DNS issues
- Low disk space
- Unusual resources
- Corrupted cache
- …
Also see:
- How To Fix HTTP Error 429: Cause And Fixes
- 5 Ways to Solve HTTP Error 401 Unauthorized
How to Fix HTTP/1.1 Service Unavailable
Fix 1: Try Some Basic Fixes
First, you can try some initial basic fixes to get rid of the HTTP/1.1 service unavailable error. You can try to restart your computer and refresh browsers. Then, it’s recommended to check the Internet connection. After trying these methods if the error still appears, you can try the next solutions.
Fix 2: Try to Access the Unified Gateway Page
Then, you can try to access the unified gateway page to fix the “HTTP/1.1 service unavailable” issue. Here is how to do that:
Step 1: First, add the storefront server as a service, then try a connection monitor, such as ICMP or TCP defaults, to check for connectivity or some port issues.
Step 2: Next, allow port 443 through the firewall for the storefront IP.
Step 3: Now, open the storefront settings, and make sure you are not dealing with any 443 port mismatches in the unified gateway configuration.
Step 4: After that, see if the following expression is missing from the storefront store name.
REQ.URL.PATH.SET_TEXT_MODE(IGNORECASE).STARTSWITH(“/Citrix/STORE_NAME
Step 5: Then you can add the above line to your content switching policy. You can try to visit the unified gateway page.
Fix 3: Check Date & Time
If the error occurs even if the time and date are correct, you might need to turn off Internet Time. Here’s how to do it.
Step 1: Press the Windows + I keys together to open Settings.
Step 2: Go to Time & language > Date & time.
Step 3: In the right pane, turn on the Set the time automatically option.
Fix 4: Clear SSL State
Sometimes the SSL state can lead to the HTTP/1.1 service unavailable error. Thus, you can clear the SSL state to fix your issue.
Step 1: Go to Control Panel (viewed by Category) in Windows 10.
Step 2: Click Network and Internet > Network and Sharing Center > Internet Options.
Step 3: Under the Content tab, click Clear SSL State.
Step 4: Save then change and restart broswer to see if your issue is fixed.
Also see: 2 Ways to Fix SSL Connection Error on PC
Fix 5: Clear Cookies and Cache
Clearing the cache may be helpful to fix the “HTTP/1.1 service unavailable” issue. There are the steps.
Step 1: Open Google Chrome and click the three-dot button in the upper right corner.
Step 2: Choose More tools and click Clear browsing data.
Step 3: In the pop-up window, set Time range to All time. Check the Cookies and other site data and Cached images and files options. Then click Clear data.
Fix 6: Check for Virus or Malware
You can also use Windows Defender to check for malware and virus to fix the issue. Follow the steps below to perform a full scan.
Step 1: Press the Windows + I keys at the same time to open Settings.
Step 2: Go to Update & Security > Windows Security > Open Windows Security.
Step 3: In the new window, click Run a new advanced scan.
Step 4: Choose Full scan and click Scan now. Wait for the process to complete and then you can check if the mrtstub.exe is a virus.
Fix 7: Clear Your DNS Cache
Then, you can try to clear our DNS cache and reset your IP. Here is how to do that:
Step 1: Type cmd in the Search box. Then right-click Command Prompt to select Run as administrator.
Step 2: On the command prompt window, type the following commands and press Enter after each.
ipconfig /flushdns
ipconfig /registerdns
ipconfig /release
ipconfig /renew
Then restart your computer and try to access the website to check if the “HTTP/1.1 service unavailable” still exists.
If all of the solutions are not working, you can try to update your browser and disable Windows add-ons.
Final Words
To sum up, this post has shown some ways to fix the “HTTP/1.1 service unavailable” issue. If you come across the same error, try these solutions. If you have any different ideas to fix it, you can share them in the comment zone.
About The Author
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Position: Columnist
She was graduated from the major in English. She has been the MiniTool editor since she was graduated from university. She specializes in writing articles about backing up data & systems, cloning disks, and syncing files, etc. She is also good at writing articles about computer knowledge and computer issues. In daily life, she likes running and going to the amusement park with friends to play some exciting items.