Claude Opus 4.6 FAQ: Conversation Lag, Message Limits, and Attachment Handling

When using Claude Opus 4.6, the most common frustrations are “unable to send messages, the page keeps spinning, attachment uploads fail, and answer quality varies.” This FAQ breaks down the most frequent scenarios and explains them clearly. Follow the steps to troubleshoot—you won’t need to keep trial-and-erroring.

Messages won’t send / request failed: Check your network and account status first

If clicking Send in Claude Opus 4.6 does nothing or you see a request error, first switch networks (for example, from Wi‑Fi to a mobile hotspot) and try again—many issues come from temporary connection instability. Next, log out of and back into Claude Opus 4.6 to avoid “false online” states caused by abnormal session status.

If Claude Opus 4.6 keeps indicating you’re restricted or you can’t continue sending messages, it’s usually related to too many requests in a short time or an overly long session. You can start a new chat, condense your target question into three to five key points, and ask again—the success rate is higher.

The page keeps spinning / loads very slowly: The browser environment is the key

If Claude Opus 4.6 gets stuck on a loading spinner, first open the same page in an incognito window to quickly determine whether it’s a cache issue or an extension conflict. Then temporarily disable ad blockers, script managers, and privacy-protection extensions—these are the most likely to block required requests for Claude Opus 4.6.

If the incognito window works normally, go back to your usual window, clear the site cache and cookies, then log in to Claude Opus 4.6 again. If it’s still unstable, switch to a different browser engine or upgrade your browser version—this is often more effective than repeatedly refreshing.

Attachment upload fails / incomplete parsing: “Align the format” based on the on-page prompts

If file upload fails in Claude Opus 4.6, don’t guess the limit values—follow the upload dialog or error message. Focus on checking the file type, size, and whether the filename contains unusual characters. Rename the file using only English letters/numbers and remove special symbols, then re-upload in Claude Opus 4.6 to avoid many compatibility issues.

If Claude Opus 4.6 can upload the file but doesn’t read it fully, it’s usually because the content is too long or the structure is too complex, causing unstable parsing. Split it into smaller files, or keep only the pages/chapters that need analysis before submitting it to Claude Opus 4.6.

Answer quality varies: Correct it with “reset context + explicit constraints”

In long conversations, Claude Opus 4.6 can be influenced by earlier information. If it goes off-topic or contradicts itself, start a new chat and paste in your “final requirement + known conditions + output format.” At the same time, ask Claude Opus 4.6 to first restate the task boundaries (such as scope, definitions, and prohibited items), which can significantly reduce drift.

If you notice Claude Opus 4.6 getting slower the longer you chat or being restricted frequently, you should also control the context size: keep conclusions, remove process details, or compress the conversation history into a bullet-point list. This helps Claude Opus 4.6 stay more stable and makes the results closer to your goal.