"When you access Claude, the screen turns blank," "An error occurs and you can't talk," or "It was working until recently, but it suddenly stopped responding." Have you ever experienced something like that?

On March 2, 2026, Anthropic's AI chat "Claude" experienced a major outage, making it unavailable to users around the world. Claude announced the US App at the end of February 2026. The number of users is rapidly increasing to the point where it has taken the number 1 spot in the Store's free app rankings, and it is facing a series of obstacles due to "unprecedented demand".

In this article, we will introduce How to quickly determine whether it is a problem or whether it is just your problem when Claude cannot be used, and five ways to deal with each situation.

Check first: How to check Claude's fault information

When Claude cannot be used, the first thing to do is to check if the problem is on the service side. How you deal with the issue will vary depending on whether the issue is with your own environment or with Anthropic's servers.

Official status page (most accurate)

Anthropic has published an official status page. You can check the operating status of each service in real time by simply accessing the URL below.

When you open the page, the status of each service will be displayed as shown below.

  • 🟢 Operational (normally operating)
  • 🟡 Degraded Performance
  • 🔴 Major Outage

The status is divided by service, such as "Claude.ai", "API", and "Claude Code", so check the column for the service you are using. The failure on March 2, 2026 had a large-scale impact on Claude.ai (web version and mobile version), but the scope of the impact was different in that only some methods of the API were affected.

Settings to automatically receive failure notifications

On the status page, you can also set up to receive automatic notifications when a failure occurs. If you register a notification destination such as email, Slack, or Microsoft Teams from the "Subscribe" button at the top right of the page, you will be able to know when a problem has occurred without having to go to the trouble of opening the page.

If you use Claude on a daily basis for work, we recommend setting this notification setting.

Check for problem reports on SNS

In some cases, the status page cannot keep up with updates. In such a case, you can search for "Claude disorder" or "Claude can't use" on X (formerly Twitter) to quickly see if anyone else has the same symptoms. Even after the failure in March 2026, there were many posts on X such as ``Is Claude still unusable?'' and ``I can't use it at all because of an error message.''

By cause: 5 patterns in which Claude cannot be used and how to deal with them

After confirming whether there is a problem, the next step is to isolate the specific cause. We will introduce 5 common cases when Claude cannot be used and how to deal with each.

Pattern 1: Server-side failure (cannot be fixed by yourself)

Symptoms: The screen becomes blank, "Something went wrong" or "Internal Server Error" is displayed, there is no response when sending messages.

How to deal with it:

  • Once you see the failure on the status page, you have no choice but to wait for recovery. If you keep reloading the page in a hurry, it will put more load on the server
  • If you register for notifications by clicking "Subscribe" on the status page, you will receive an email when recovery occurs
  • If you have urgent work to do, temporarily switch to an "alternative AI service" described below

By the way, Anthropic completed recovery in about half a day after the failure occurred on March 2, 2026. The following day, March 3rd at 9:36 (UTC), the fix was implemented and the status was updated to Monitoring.

Pattern 2: Caused by browser cache and extensions

Symptoms: Does not work in certain browsers, screen display is strange, buttons do not respond

How to deal with it:

  1. Delete browser cache and cookies (Steps for Chrome)
  2. Try opening in incognito mode (private window)
  3. Temporarily turn off ad blockers and security extensions
  4. Try with another browser (Chrome, Firefox, Safari, Edge, etc.)

In particular, the ad blocker "uBlock Origin" and VPN extensions may block the communication of AI services. If it works normally in incognito mode, it is almost certain that an extension is the cause.

Pattern 3: Network/VPN environment problem

Symptoms: Loading never finishes, timeout error occurs, cannot be used only from work PC

How to deal with it:

  1. Restart your Wi-Fi router (unplug it, wait 30 seconds, then reconnect it)
  2. Try using mobile data communication on your smartphone (Isolate whether Wi-Fi is the cause)
  3. Check with your IT department to see if your company's VPN or firewall is blocking Claude.ai

It is not uncommon for companies to restrict access to external AI services due to their security policies. In that case, you will need to request whitelisting from your IT department or use it for personal use on a non-company-issued device.

Pattern 4: Caught in usage restriction (rate limit)

Symptom: ``You\'ve hit the usage limit'' ``Please wait and try again'' is displayed

How to deal with it:

  • For free plans, there is a limit to the number of messages per certain period of time. Wait a few hours and try again
  • If you frequently run into limits, consider upgrading to a paid plan (Claude Pro: $20/month/approximately 3,000 yen)
  • Sending long prompts will consume more tokens, making it easier to reach the limit. Another option is to keep the prompts short.

As of March 2026, the number of messages available for Claude's free plan varies depending on the time of day. Restrictions may become stricter during periods of high demand (noon to evening Japan time).

Pattern 5: The app or OS version is old

Symptom: Smartphone app does not start, "Update required" message is displayed

How to deal with it:

  1. Update the Claude app to the latest version on the App Store/Google Play
  2. Update your smartphone's OS itself to the latest version
  3. Uninstall and reinstall the app
  4. If that doesn't work, access claude.ai from your smartphone's browser and use it

Since Claude's app is updated frequently, it may not work properly if you are using an older version. For peace of mind, turn on automatic updates.

Claude is in trouble! How to temporarily switch to an alternative AI service

If there is no choice but to wait for recovery due to a server failure, it is realistic to use an alternative AI service for urgent work. As of March 2026, we will introduce the main services that can be used instead of Claude.

ServiceFree plan availableFeatures compared to Claude
ChatGPTYesHighly versatile, with plenty of plugins and GPTs (custom AI)
GeminiYesStrength is cooperation with Google services. Good at reading long texts
CopilotYesIntegrated with Microsoft 365. Often used on company PC
GrokYesYou can view real-time information from X (formerly Twitter)

The key is to create accounts for two to three services during normal times, instead of creating accounts in a hurry after a failure occurs. The free plan is sufficient, so be prepared to switch quickly in an emergency.

By the way, Wakaran? We have also published ChatGPT/Claude/Gemini free version comparison article, so please refer to it if you are confused about which service to use.

Why is Claude's disability increasing? Background for March 2026

From the end of February to March 2026, Claude is experiencing an unprecedented increase in demand. There are several factors behind this.

Ranked 1st place for free apps in the US App Store

According to CNBC report, Claude took first place in the US App Store's free app ranking on Saturday, February 29, 2026. Overtaking ChatGPT and taking the lead was Claude's first feat. According to Sensor Tower data, it was outside the top 100 at the end of January, but has skyrocketed during February.

Sudden increase in the number of users

According to Anthropic's PR, ``the number of daily sign-ups is hitting a record high every day,'' ``the number of free users has increased by more than 60% since January,'' and ``the number of paid members has more than doubled since the beginning of the year.'' The direct cause of the failure appears to be that the number of users has increased at a faster pace than the server's processing capacity.

Relationship with the US government's AI policy

The reason behind the rapid increase in users is the growing support for Anthropic's negotiations with the US Department of Defense (Pentagon) on protection conditions regarding AI safety. TechCrunch's report analyzed that users who sympathized with this attitude migrated to Claude.

In other words, Claude's problems can be said to be "problems caused by becoming too popular". Anthropic is increasing its servers, but there may be intermittent outages due to increased demand for a while.

Three things you should do now to prepare for failure

Not limited to Claude, AI service failures may continue to occur. Now that we are increasingly relying on AI for work and learning, it is surprisingly important to prepare for when AI cannot be used.

1. Set status page notifications

Just go to status.anthropic.com and click "Subscribe" → register your email address. You will receive automatic notifications when a failure occurs or is restored.

2. Create an account for an alternative AI service

Create at least two free accounts from ChatGPT, Gemini, and Copilot. If you try the same prompt on multiple AIs on a regular basis, you can smoothly switch between them in an emergency.

3. Export important conversations

Claude's conversation history is stored on the server, but cannot be accessed during the outage. It's a good idea to copy important communications to text files or Notion. Keep the results of a particularly long code generation, or a prompt that you've worked through many times, to keep handy.

FAQ

How often does Claude fail?

Although large-scale failures are rare, they have occurred intermittently from February to March 2026 due to the rapid increase in users. You can check the frequency from the past history on the official status page (status.anthropic.com).

Will the conversation history be deleted if Claude is unavailable?

Even if access is temporarily unavailable due to server failure, the conversation history will generally not disappear. If you log in after recovery, your previous conversations will still be visible.

If I get hit with usage restrictions on the free plan, how long do I have to wait to recover?

As of March 2026, the rate limit for the free plan has not been clearly disclosed. Restrictions are generally lifted after a few hours to half a day, but may become even stricter during periods of high demand.

Is Claude Code also affected by the failure?

Yes. The March 2, 2026 outage also caused instability in Claude Code (a coding support tool for developers). However, the impact on business users who use the Claude API directly was relatively minor.

What happens if I send a message to Claude during an outage?

Depending on the type of failure, an error message will be displayed or no response will be returned. Although sent messages are not normally processed twice, we recommend that you do not force yourself to continue sending messages during a failure and wait for recovery.

References