When an electronic signature workflow fails, the cause is often somewhere between the source file, signing rules, identity checks, email delivery, browser session, and final audit record. This reusable eSignature troubleshooting checklist helps support, operations, and document teams isolate the problem, apply a safe fix, and confirm that the completed document is usable and properly recorded.
Overview
Start by identifying where the workflow stopped. A document may fail before upload, during preparation, when it is sent, while a signer is completing it, or after signing when the system creates the final record. Treating every issue as a generic “electronic signature not working” problem can lead to unnecessary changes and make the original cause harder to find.
Record the basics before troubleshooting: the document format and approximate size, the affected user or signer, the device and browser, the workflow or template involved, the exact error message, and the time the issue occurred. If an integration or API is involved, also capture the request or transaction identifier, response status, and whether the platform received the callback.
Use this order when diagnosing a document signing error:
- Confirm the file: Check that the source document opens, is complete, and meets the platform’s current format and size requirements.
- Confirm the workflow: Review recipients, signing order, required fields, authentication settings, and expiration rules.
- Confirm the session: Test the link, browser, device, network, and authentication method without exposing confidential information.
- Confirm completion: Verify that all required parties signed and that the final document and audit trail were generated and stored.
For broader controls around links, devices, access, and logs, use the eSignature security review checklist. If the workflow begins with paper records, the paper-to-cloud signing migration checklist can help identify process issues before they become signing failures.
Checklist by scenario
The table below is designed for first-line triage. Apply the smallest appropriate change, then retry from a clean session.
| Problem | Likely causes | Checks and practical fixes |
|---|---|---|
| Upload fails | Unsupported format, file-size limit, damaged PDF, password protection, or unusual document structure. | Open the file locally, remove unnecessary attachments or restrictions where permitted, export a clean PDF, and compare its size and format with the platform’s current limits. Preserve the original separately. |
| OCR text is unreadable | Low-resolution scan, skewed pages, shadows, handwriting, unusual fonts, or a language mismatch. | Rescan cleanly, straighten pages, improve lighting and contrast, select the correct language if available, and manually verify names, dates, totals, and account numbers before sending. Learn more in the guide to creating searchable PDFs with OCR. |
| Signature fields are missing | Fields were not added, are assigned to the wrong recipient, sit outside the page boundary, or were lost during conversion. | Open the prepared document in field-placement view. Confirm each signer has the required signature, date, initials, and text fields. Check every page, field assignment, and required setting before sending. |
| Signing link is expired | The envelope reached its expiration date, was cancelled, or the link was invalidated by a resend or workflow change. | Check the envelope status and expiration settings. Send a new authorized invitation rather than forwarding an old link. Confirm that the recipient receives only the current invitation. |
| Identity verification fails | Incorrect personal details, unavailable authentication method, camera or microphone permissions, document mismatch, or an attempt that timed out. | Ask the signer to retry carefully, use the permitted identity document, check device permissions, and switch to a supported browser or device if necessary. Do not weaken verification merely to complete the transaction; escalate repeated failures for review. |
| Email invitation is missing | Incorrect address, spam filtering, mailbox rules, delivery delay, or an organization’s email security gateway. | Verify the address through an approved channel, check delivery status, ask the recipient to search for the sender and envelope reference, and use an authorized resend. Avoid placing confidential documents in ordinary email as a workaround. |
| Mobile signing does not work | Outdated browser, blocked cookies or scripts, small viewport, disabled pop-ups, weak connection, or an embedded browser inside another app. | Open the link in the device’s standard browser, update the browser, allow required permissions, use a stable connection, rotate the device if fields are hard to reach, and try a desktop session when the workflow permits. |
| Signing session is stuck | Stale session data, multiple open tabs, interrupted authentication, network changes, or a browser extension interfering with the page. | Note the current status, close duplicate tabs, reopen the latest invitation, and retry in a private window or supported browser. Do not repeatedly submit if the system may already have recorded the signature. |
| Certificate or digital signature is rejected | Certificate is expired, not trusted by the receiving system, associated with the wrong identity, or incompatible with the required signature type. | Check the certificate status, signer identity, trust requirements, and document integrity. If a certificate-based signature is required, confirm the signing method before preparing the document again. |
| Audit trail is incomplete | A workflow ended before all events were recorded, an integration did not receive a callback, or the wrong version was downloaded. | Check the envelope timeline, recipient status, completion state, and integration logs. Download the final document and audit record from the authoritative system, then reconcile it with the transaction identifier. |
What to double-check
File preparation and OCR
Review the document visually before adding fields. Look for blank pages, clipped text, rotated pages, duplicate pages, hidden form fields, and information that OCR may have interpreted incorrectly. Searchable PDF OCR improves retrieval, but extracted text should not be treated as automatically accurate. Verify critical values against the page image.
Recipients and routing
Confirm the recipient’s address, role, signing order, delegation rules, and required fields. A field assigned to the wrong person can make a valid workflow appear stuck. For multi-party signature software, test both sequential and parallel routing when the process supports either option. Document approval workflows should also distinguish between approval, acknowledgement, and legally relevant signature actions.
Authentication and access
Check whether the signer is using the invitation intended for them and whether the selected identity-verification method is available in their location, browser, and device. Keep authentication settings consistent with the document’s risk and compliance requirements. For a more complete review of electronic signature controls, see the electronic signature compliance checklist; treat legal and regulatory decisions as matters for qualified counsel and the applicable jurisdiction.
Integrations and callbacks
When an API or automation is involved, separate the signing platform’s status from the connected system’s status. A document may be fully signed even if the CRM, storage system, or approval queue did not update. Check event names, callback delivery, authentication credentials, retry behavior, idempotency, and permission scopes. The eSignature API integration guide provides a focused checklist for requirements, security, and testing.
Final records
After completion, confirm that the final PDF is the signed version, every required party is marked complete, and the audit trail is attached or available through the authoritative record system. Store documents according to the organization’s retention and access rules. Do not use a screenshot of a signature as a substitute for the completed document package when the workflow requires a formal record.
Common mistakes
- Changing several variables at once: If you replace the file, browser, recipient, and authentication method together, you may fix the symptom without learning the cause. Change one controlled variable at a time when possible.
- Resending without checking status: A signer may have completed the action while the sender’s screen was delayed. Check the envelope timeline before creating a duplicate request.
- Forwarding old links: Old invitations may be expired, cancelled, or tied to the wrong recipient. Issue a new authorized invitation instead.
- Skipping the original file: Repeatedly repairing a converted PDF can introduce missing pages or altered text. Keep the source, working copy, and sent copy clearly identified.
- Ignoring accessibility: A workflow that works on one desktop may fail for a signer using a screen reader, keyboard navigation, mobile device, or high-zoom display. Review the eSignature accessibility checklist.
- Using email as the system of record: Invitations and attachments can be difficult to reconcile. Link the final document and audit trail to the relevant record in the approved document workflow.
When to revisit
Revisit this checklist whenever a recurring signing error appears, a workflow or template changes, a new integration is released, or a browser, mobile operating system, authentication option, or document-scanning process is updated. It is also useful before seasonal planning cycles, onboarding periods, policy renewals, and high-volume contract campaigns.
Turn troubleshooting into a small operational routine:
- Maintain a supported browser and device list, including required permissions and authentication methods.
- Keep current file-format, size, OCR, expiration, and recipient-routing requirements in the team’s runbook.
- Test representative documents before changing a production template or integration.
- Record error messages, transaction identifiers, resolved causes, and safe workarounds.
- Review unresolved patterns with the platform administrator or vendor support instead of repeatedly retrying.
A disciplined review makes digital contract signing easier to support without weakening security or losing the audit record. For a broader assessment of platform capabilities, compare the workflow against the secure digital signature software buyer’s guide and the document scanning software buyer’s guide.
