Title: Scan not starting automatically
Last modified: December 22, 2023

---

# Scan not starting automatically

 *  Resolved [Alena](https://wordpress.org/support/users/lipcrack/)
 * (@lipcrack)
 * [2 years, 4 months ago](https://wordpress.org/support/topic/scan-not-starting-automatically/)
 * Hi
 * I’m just following up on something that has been bugging me for a long time and
   I’d like to know if anything can be done or checked to determine the problem.
   Basically this program worked fine when first installed then over a period of
   time I got the invalid signature messages. It there any way to determine what
   is causing it.
 * Also I have another security program running which definitely does block ip’s
   for me in terms of bots and spiders etc. So I’m wondering why Wordfence isn’t
   picking up they are being blocked even if it is by a different program.
 * Any info on resolving the matter would be appreciated and I have had a look at
   other posts on the matter and the adivce did not reslove the first issue.
 * Regards
 * Alena
 * Dec 20 00:47:07:1703033227.609223:1:error] Scan Engine Error: The signature on
   the request to start a scan is invalid. Please try again.
 * [Dec 20 00:47:05:1703033225.060119:1:info] Scheduled Wordfence scan starting 
   at Wednesday 20th of December 2023 12:47:05 AM
 * [Dec 19 02:17:07:1702952227.777398:1:error] Scan Engine Error: The signature 
   on the request to start a scan is invalid. Please try again.
 * [Dec 19 02:17:04:1702952224.983622:2:info] Attempting to resume scan stage (0
   attempt(s) remaining)…
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fscan-not-starting-automatically%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 1 replies (of 1 total)

 *  Plugin Support [wfpeter](https://wordpress.org/support/users/wfpeter/)
 * (@wfpeter)
 * [2 years, 4 months ago](https://wordpress.org/support/topic/scan-not-starting-automatically/#post-17296431)
 * Hi [@lipcrack](https://wordpress.org/support/users/lipcrack/), thanks for reaching
   out with your scan log.
 * I’ve recently seen “The signature on the request to start a scan is invalid” 
   when also running a plugin called Loginizer for another customer recently. That
   may not be the same as the plugin you’re running alongside Wordfence but thought
   I’d mention it just in case.
 * They diagnosed this by disabling their other plugins one-by-one until the Wordfence
   scan started working again, so you could try the same thing to see if it can 
   be narrowed down. In that case, the customer disabled the other plugin, but that
   doesn’t mean there isn’t an allowlist or other configurable solution where both
   plugins can run together.
 * If you don’t have the plugin mentioned above, or your process of elimination 
   doesn’t seem to help, you can send a diagnostic to **wftest @ wordfence . com**
   directly from the link at the top of the **Wordfence > Tools > Diagnostics** 
   page. Then click on **“Send Report by Email”**. **Please add your forum username
   where indicated and _respond here after you have sent it._**
 * **NOTE:** It should look as follows – Screenshot of [Tools > Diagnostic > Send by Email](https://www.wordfence.com/wp-content/uploads/2021/09/diagnosticsendbyemail.png)
 * Thanks,
   Peter.

Viewing 1 replies (of 1 total)

The topic ‘Scan not starting automatically’ is closed to new replies.

 * ![](https://ps.w.org/wordfence/assets/icon.svg?rev=2070865)
 * [Wordfence Security - Firewall, Malware Scan, and Login Security](https://wordpress.org/plugins/wordfence/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wordfence/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wordfence/)
 * [Active Topics](https://wordpress.org/support/plugin/wordfence/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wordfence/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wordfence/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [wfpeter](https://wordpress.org/support/users/wfpeter/)
 * Last activity: [2 years, 4 months ago](https://wordpress.org/support/topic/scan-not-starting-automatically/#post-17296431)
 * Status: resolved